Glock firing pin. 2 G19 broke indeed after only about 5k rounds or less.

Glock firing pin While this pin gives me 80+% sear engagement the slide safety plunger is not Compact Dagger™ firing pins break at a much higher rate than OEM Glock firing pins, Compact Dagger™ Broken Firing Pin. The kits are available for all models of Glock®, and are available The spear shaped tip of the Glock firing pin is supposed to be more efficient at doing it's job, but it also serves another purpose. *No file sharing *no sharing without attribution *no commercial use without creator's knowledge In this episode of Five Minute Freedom Tips, "How to change change a Glock Firing Pin Spring"! Join me for a first hand look at how simple it is to change m Another discrepancy I noted with the Glock 43 was linked to the Polymer 80. This is the mechanism that prevents the gun from firing in the event the pistol is Today, we are testing the Glock factory MIM Firing Pin against two Shadow Systems 17-4 Stainless Steel Billet Firing Pin to see which is more resistant to failure over time The Firing Pin Assembly Kits for Glock® feature the components needed to quickly and easily replace your firing pin parts. Gen 5 Glock Recoil Spring Assembly. Quick view. 1EA SP00056 OEM GLOCK Firing Pin Spacer Sleeve. Includes firing pin, firing pin spring, spring cups, and spacer There were some aftermarket mods the previous owner had made with the connector and trigger spring, also firing pin spring, but I threw those out and put stock Shop Shadow Systems Firing Pin Assembly fits Glock Pistols | $4. Caliber: 9mm; Fits models: G17 GEN5, G19 GEN5, G19X, G26 GEN5, G34 GEN5 MOS; GLOCK Your Glock firing pin safety spring needs a replacement every year or every few thousand rounds or as you replace the firing pin safety. Why not go for the best by choosing from this collection of safety plunger springs? When choosing a Glock Firing pin, Gorilla Machining is an excellent option to replace your worn out firing pin. Top. Was: $34. New. The Glock firing pin is a small, spring-loaded component that is responsible for striking the primer of a cartridge and igniting the powder charge. Glock OEM Firing Pin Firing pin polished, spring cleaned. Push it in and it's gritty and sticks at the bottom. Its high-quality construction and compatibility with both Gen3 and Gen4 models ensured a seamless Simple tool for easily installing a firing pin channel liner in Glock-style slides | Download free 3D printable STL models English en Čeština Deutsch English Español Français Recently bought a gen 4 19. Jump to Latest 5. 2 G19 broke indeed after only about 5k rounds or less. 95 A firing pin or striker is a part of the firing mechanism of a firearm that impacts the primer in the base of a cartridge and causes it to fire. I have Gen 5 Glock Firing Pin Safety Plunger & Spring. This drop-in upgrade delivers a Then, push the firing pin safety plunger down and remove the back plate to access the firing pin assembly. 00 ฿ glock slide cover plate 9mm . But I Firing Pin Safety Test. ADD TO CART NOTIFY ME WHEN IT'S BACK IN STOCK. Cracks, especially under ejection port 1. The kit contains: P80 Firing Pin Assembly; Works with Gen 1-4 builds, both 9mm and . Quick view Add to Cart. SKU: GLSP00049. com today for the best selection in factory and aftermarket parts to keep your Glock running to Shop firing pins for GLOCK from Lone Wolf Arms, GLOCK OEM, and Lightning Strike. Our collection also includes marine spring cups for Glocktalk is a forum community dedicated to Glock enthusiasts. 35 including VAT Select options This product has multiple variants. It is a So, I created a comparison composite. It’s dimpled where it seems to meet the firing pin safety. GLOCK’s revolutionary SAFE ACTION The second safety, the firing pin safety, mechanically blocks the firing pin from moving forward in the ready-to-fire condition. 45 ACP fits all 10mm and . Our Rectangular Tip Firing Pin is machined out of a solid billet of American 17-4 stainless steel. With the first firing pin assembly, I can't determine from the photo if the firing pin spring was By swapping slides, barrels, and recoil spring assemblies, I managed to isolate the problem to the Shield Arms Glock 43 slide. Log In. Slide complete it is sticky. Details. The only thing they give you are light strikes and other problems. Explore a wide range of Firing Pin Springs on Brownells Australia. $4. 95: Quantity Add to Cart Add to Wishlist. Glock OEM Firing Pin Safety Fits G42 $4. ×. These GLOCK FIRING PIN SAFETY GEN5 9MM. Brownells Part No : 969161620. 1EA SP00070 OEM GLOCK Firing Pin Spring Cup (x2) 1EA SP01448 OEM Why Your Glock Rattles: Common Causes. 00 Glock Firing Pin Channel LinerFiring Pin Channel Liner - fits all models. Firing Pin Safety: The firing pin safety (8) mechanically blocks the firing pin (4) from moving forward in Put the stock firing pin back in and don't look back. 850. G42 Firing Pin $59. 00. It has struck against firing if the pistol is dropped or the trigger is subjected to lateral pressure. TUNE-UP KIT. 5mm - Glock Firing Pin Channel Liner - fits all models. Additional Info Additional Info. MADE OF HARDENED MARTENSITIC STAINLESS STEEL (NOT Glock Firing Pin AssemblyThe stock firing pin assembly for the G-17 ,19, 19x, 22, 23, 26, 27, 34, 45, 47 MOS Gen 5 Glock pistols. com/Products. Options. 99 $4. I suspected debris/dirt in the firing pin channel and so paid special attention to its' cleaning. All of the firing pins break in the exact same way (in the same way your firing pin broke), often involving rather The LANTACT Firing Pin Safety has been lightened with a series of chamfer cuts that reduce weight and retain strength. It's easy enough to visually check the protruding Related products. 40S&W; Comes My 3rd Gen G17 and G26 from 2009 both have over 15K rounds thru them with no firing pin problems. Below is a detailed description of Difference in firing pin spring weight? I ordered the complete pyramid trigger kit that comes with the 2,4, , You may post anything as long as it is related to the Glock line of pistols, and you Glock Firing Pin Parts. 4K views 30 replies 18 participants last post by ItsAllGlockToMe Jul 17, 2023. 00 I would say "50k rounds" instead of "5k rounds" - unless it is defective. Caliber: 9mm. Old. View Detailed Images 1. Firing pin safety 5. G42 Trigger pin $5. Today while at the range the problem happened virtually every First post here. As low as $19. Our collection also includes marine spring cups for Glock Firing Pins at TopGunSupply. Tapping Lightly with a Hammer Won't Break It, Should Be Stronger Precision CNC-machined Glock Firing Pin Assembly serves as a drop-in replacement for the OEM Glock firing pin, ensuring a perfect fit. When I field strip my gun I notice that the striker is protruding from the firing pin channel. Upgrade your Glock pistol for a perfect strike every time by choosing from our selection of carefully selected firing pins and springs. $16. 40, 357 & 45GAP pistols. In stock ADD TO CART. Related products. It's the best illustration of the Glock mechanism that has been published. $5. The GLOCK Firing Pin Channel Liner proved to be the perfect solution. $18. Glock 19 . 40 S&W will do also I think). I'm completing my first p80 build and when I cycle dummy rounds through the gun, every round pulled from the magazine gets hung up on the firing pin! I'm The 33373 marking is indicative of a Glock firing pin for the 43, 43X, and 48. FAQs about taking the firing pin out of a Glock 1. Part number 12 on the Glock Schematic. I have not been able to run a full magazine through it without having 2-3 rounds get stuck Upgrade or complete your Glock build with our exclusive selection of aftermarket firing pin safeties for Glock pistols from renowned brands like Lightning Strike and RYG. When you put the spring into the firing pin safety, compress it and twist clockwise. Share: Related Products. 5mm Plastic Fixed 049 GLOCK FIRING PIN 9,380 UPC $54. The extended tip enhancement eliminates light primer strikes! We at Cross Armory have been We were told at our recent (1/7/20) Glock Armorer's class that they just highly polished the firing pin channel to reduce any drag caused by the rimfire ammunition,which as Glock Firing Pin Spring - fits all models (end with the most coils goes toward the spring cups). Ask a question about this product. The problem occurred when I cautiously let the slide return home while keeping the trigger fully 1EA SP00133 OEM GLOCK Black Slide Cover Plate. Out of stock. Clean out with a qtip, alcohol would not hurt either. Best. Jump to Latest 12K views 105 replies 22 participants last post by creativetownsman Feb 2, 2020. C. No metal The Glock Firing Pin Safety mechanically blocks the firing pin from moving forward in the ready to fire position. Almost everyone else has used In this video you get to see my install the new Glock 44 aluminum firing pin spacer and fumble around as I lose a part. Clean the internal parts, if you put oil or CLP on them wipe the very dry before reassembly. 40 S&W and . Choose raw stainless or Anti gun loonies never let reality, truth or engineering issues keep them from pushing for worthless recommendations. The GLOCK firing pin springs are essential components compatible with both Gen3 and Gen4 pistols. Weighing 50% less than the factory OEM firing pin, the Total strip down of the firing pin module: Firing pin, caps, spring, sleeve with aid of a . Original Equipment Manufacture (OEM). Come join the discussion about Glock pistols and rifles, optics, hunting, gunsmithing, styles, reviews, Shadow Systems' rectangular tip firing pin is machined out of a solid billet of American 17-4 stainless steel. These firing pin safety This is an aftermarket G19 Gen3 firing pin. Improved sear geometry yields a We use cookies to give you the best possible experience. 00 ฿ glock gen 3,4 extractor depressor plunger assembly . Comprehensive Guide to GLOCK Firing Pin Springs. These critical upgrades must be performed in the interest of safety and reliability. Other products you This Glock factory firing pin is a factory original from Glock. Model Compatibility: G17/G19 . -----Ways to follow me and contact me Your Glock is still 100s of times more reliable then a sig, I know it’s discouraging but you just got a lemon firing pin, warranty it and glock will send a new one, they may want to examine it to Find many great new & used options and get the best deals for Glock OEM Firing Pin at the best online prices at eBay! Free shipping for many products! Combat Armory Firing Pin/Striker For Glock 9mm. Tags firing pin safety safety shelf sear engagement. Gen 5 Glock Magazine Follower (Orange) $3. 3,800. Upgrade present 3. I got the itch and decided to buy a ghost rocket connector that came with a 6 lb trigger spring, 6 lb firing pin spring, and a Upgrade to an L2D Striker for Glock pistols for maximum performance, reliability, and service life. Front Sight pin/screw present 1. By inducing oil to the F P/striker you are With the firing pin in the Hellcat, as well as the Glock firing pins, in that shape of a flat elongated tip it seems possible that is just the way the firing pin impacts the primer. My first Glock, and I love it. All parts are made to the exact specifications as the original in your pistol. You must be logged in to post a review. shipped from our Mitchell, GLOCK PACK OF 3. It's probably factory. The firing pin is built to match the We use cookies to give you the best My entire post contains only a few words, but gets the point across. Condition of extractor 4. 3. Find your Glock firing pin and restore your Glock j10mm /45 ACP or 22 40 Cal with our stainless steel and titanium firing pins. They You should be aware that the Gen5 models ALL have a modified SLIDE and FIRING PIN that use the conventional round FIRING PIN tip. 00 including VAT Add to basket; Glock Firing Pin Safety R 165. DISCLAIMER: “GLOCK” is a federally registered trademark of GLOCK Yes, occasional/incidental dry firing is fine, but Glock recommends using a snap cap for extended dry firing (it's in the FAQs section of Glock's website). • Handle also includes a cavity for holding the firing pin and spacer in place for easier assembly/disassembly of the firing pin spring and spring cups. They also make a 28N (Red) and a 31N(Blue) firing pin springs but they are not available to the US market. Sixgun1508 Discussion starter. This is a great drop-in no hassle replacement for your worn out Glock parts or a new build. Controversial. 357 SIG has 2 dashes on the barrel of the pin . Ppl need simple, concise information & images; circles bad. 51 Grams. To buy strikers see here: http://www. 23% Weight Reduced! Cross Armory Firing pin Weight: 5. If your gun is relatively new, you may need to push on the firing pin to get it to move forward. Many people think this is impossible, but it's not. Proper procedure for disassembly and reassembly of your firing pin assembly. Clean the firing pin channel Can I upgrade my Glock firing pin for better performance? Yes, there are aftermarket firing pins available that offer improved durability and reliability. I'm rusty in my Glock knowledge. 99 . A Glock firing pin leaves %PDF-1. See photo for Pre & Post Firing Pin Springs for sale. aspx? As a Glock armorer and owner/user, I'd also recommend leaving the stock firing pin in a gun used for defensive purposes. Share Add a Comment. 45 has 3 dashes on the barrel of the pin. aspx?CAT=4521 Glock OEM firing pin assembly fits Glock 42 only. Glock Front Sight Screw R 69. Integrated trigger safeties are Bought this for a PSA Dagger slide that was slam firing after 500 rounds due to short sear engagement. If you just want to replace the whole assembly (which includes the firing pin, Glock firing pin. Quantity Discount Price Purchase Limit . Factory replacement parts are manufactured to the exact same specifications and We use cookies to give you the best Glock 22 firing pin safety failure. 00 Off 4. Contact: 817 420 6011 | Contact Us. However, the explanation that continues after minute 6:30 is completely true ONLY if the shooter Glock firing pin safety. The kit contains: P80 Firing Pin Assembly; Works with There is no Glock similarity to the firing pin arrangements of weapons like the AR-15. How the Glock Firing Pin Safety works. Made in the USA to exact specifications by Lantac USA manufactures the highest quality Glock Firing Pin Upgrades. Sort by: Best. Maybe I need to Find the best Glock accessories available when you shop online at GlockStore. Rating Required. Those skeleton pins have no real benefits anyways. Add to Cart. I've shot maybe 20k through it plus a years worth of dry fires. From parts and holsters to magazines and custom items, our business has the items you need! The spear shaped tip of the Glock firing pin is supposed to be more efficient at doing it's job, but it also serves another purpose. View All Close. 60 – R 171. Current Stock: Quantity: Decrease For Glock 19 , 20 , 21 and another, there is cube for firing pin when is disasembled. 00 ฿ Replace old worn-out, parts or use this kit to complete stripped Glock Gen5 19/19X/45 uppers. No burrs. Save on Glock firing pins. FOR G17 GEN5, G19 GEN5, G19X, G26 GEN5, G34 GEN5 MOS; GLOCK Firing Pin Safety. Upgrade Glocks standard firing pin spring is a 24N(Silver) spring. Maximum service life and reliability, upgrade today! The store will not work correctly when That's what Glock calls "Firing Pin Safety including Spring" on the official Parts Order Form. CNC Striker / Firing Pin Stainless Description Polymer80 Firing Pin Assembly. Rating: Weight: 1. I shot a friends Glock that has all of the fancy titanium parts and all of the fancy aftermarket bells and whistles. Parts Included: - Gen 5 G19 Glock OEM Recoil Spring Assembly - Glock 6. The purpose of the Glock Firing Pin Safety Test and the Firing Pin Test is to ensure that the firing pin safety is working. Cleaned the plunger hole. The skeletonized design reduces weight while keeping all Precision CNC-machined Glock Firing Pin Assembly serves as a drop-in replacement for the OEM Glock firing pin, ensuring a perfect fit. The pin is what drives forward into the primer igniting the I would say "50k rounds" instead of "5k rounds" - unless it is defective. Along with the absurdity of microstamping a Glock #glock #trending #trendingshorts #9mm #guns The Strike Industries Striker Spring set for GLOCK allows users an economical way to be able to set their striker spring tension to the perfect level Strike Industries Firing Pin Spring Kit for Glock Firing Pin Safety Upgrade | Glock 43 / 43X / 48. 350. If it gets too much oil in it, then the oil will attract dust and it Find the best Glock accessories available when you shop online at GlockStore. When I first purchased the gun and field stripped it the Personally I see no need to change the firing pin out on a Glock. Can I remove the Glock Factory Firing Pin Assembly 9mm Luger Glock 17 Gen 5, 19 Gen 5, 19X, 26 Gen 5, 34 Gen 5 MOS, 45, 45 MOS Glock P/N: 49 - Firing Pin - Fits 9mm & . Is it normal for the Glock Firing Pin Assembly Fits G42 $45. OK. Not to mention, googling "heat treated You’ll discover a full lineup of parts, including the OEM Glock firing pin, Glock locking block pin, and Glock trigger housing pin you need for your specific model and generation, as well as a I have experienced Glock firing pin tip broken off on two occasions. From pins and holsters to magazines and custom items, our business has the items you need! For folks building their own Glock and Glock variant slide assemblies or repairing broken spring cups on existing slide, installing the spring cups on the striker while Improve trigger feel and boost performance with our enhanced Striker for Glock Gen 5 pistols. 99 Sale: $18. Polished surfaces ensure a smooth, Firing Pin Retainer Cups (1) Firing Pin Spacer Sleeve; Take the firing pin assembly and other internal parts out of the slide. Fits models: G17 GEN5; G19 GEN5; G19X; G26 GEN5; G34 GEN5 MOS; GLOCK OEM part L2D Combat Precision’s Glock firing pin kit includes a precision polished stainless steel striker, a premium grade ISMI 5. Glock Firing Remove the backplate, the firing pin block and the striker and spring. GLSP04557 OEM Glock Firing Pin for 10mm and . Status : Glock Gen 5 firing pin (Striker Assembly) disassembly for cleaning purposes. This product is Made of heat treated stainless steel, while providing an excellent Glock OEM 9mm Firing Pin, 1 dash. $20. With just the plunger and spring installed it works smoothly. Grooves (condition of) 2. Come join the discussion about Glock pistols and rifles, optics, hunting, gunsmithing, styles They are glock gen 5 firing pin model 17, 19, 34 - sku: glk36618 Rating Required Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Required Some owners may choose to upgrade or modify their Glock 19’s firing pin system for various reasons, including improved performance or to address specific issues. Keep your Gen5 Glock running to perfection with the Gen5 Firing Pin Assembly! Visit GlockStore. 2. I don't The L2D Combat aftermarket Glock Firing Pin Safety is specifically engineered to enhance the trigger pull experience of Glock generation 3 - 4 pistols. 2 that I bought brand new about 30 years ago. The 2. See the full video for complete Glock frame and slide disassembly and reassembl Instructions on how to remove and reinstall a firing pin assembly. 5 posts Be the first to review “Cross Armory Striker / Firing Pin for Glock Gen 3 & 4 – GOLD” Cancel reply. Quick View Check out GLOCK FIRING PIN ASSEMBLY GLOCK® 44 | Brownells available Online at Brownells Today and many more Handgun Slides & Parts products are available in our Gun If you own or are purchasing an older Glock model, you may need one of the Glock Firing Pin Upgrades. We believe in reliability, therefore, our The GLOCK Firing Pin is a crucial component for your firearm's performance. Our Price: $ 47. com for the best selection in factory and aftermarket parts today! The Innovative and first of its kind curved crucible reduces the drag and friction between the trigger bar and the firing pin by 98%! Giving you a smoother crisper trigger pull. Depressing or pulling the trigger results in the trigger bar pushing the firing pin 22. Shop for OEM-grade firing pin assemblies and pins for various Glock pistols. glock firing pin assembled gen3 9mm . GLO-4270 OEM Glock Firing Pin for . Attention spans are short. That's a clue and not a l glock firing pin 3d models . The rattle in your Glock is caused by the tension being off the striker of the firing pin. Fits all . After the firing pin slams forward and fires the Glock 19 jamming on firing pin. Review Subject Required. Glock Extended Slide Release & RYG Extended Slide Lock Kit. It's one of those "gotta hold your Firing Pin Assembly – SGK-1014 – Shadow Systems. On retry, same thing occurred again only less frequently. In the new XDS, Springfield is attributing excessive oil in the strkier/firing pin channel to a failure to return to battery, and light primer And here we go again. I’m sorry the pictures aren’t great, but you can see the wear. . Simple Tool for Installing Glock Firing Pin Liners. Subscribe for all the latest news. 99. SUBSCRIBE FOR Weak primer strikes are possible. Order online today, or toll-free . com. One was the original firing pin came in my G19 Gen. Gen 5 Glock Rear Sight 6. Guide ring E. How to Remove a Glock Firing Pin. I think the original OEM Firing Pin in my Gen. Email Required. This test is described in the owner's manual, and if your pistol fa Glock Firing Pin Assembly - Glock 43. 1,500. While the Shadow Systems (SS) example, on right, taken from a reddit post looks dramatic (especially after just 400 rounds), my SS firing The L2D Combat firing pin safety is specifically designed for Glock Gen 5 pistols. The trigger/trigger bar is stock and I have an IDP striker, Ghost Edge connector, it may Yeah you may put oil on everything but go ahead and do it with a Glock Firing Pin/Striker assembly and good luck, have fun. A variety of factory firing pins and upgrades for Glock guns in stock and ready to ship. Get a perfect strike every time with the OEM Glock Firing Pin! Shop GlockStore. 3rd dagger firing pin snapped. Glock Having watched and done the Glock "25 cent trigger job" I was wondering if there is any advantage or disadvantage to gently polishing the entire Glock firing pin. But I First timer here. 4 %âãÏÓ 264 0 obj > endobj xref 264 20 0000000016 00000 n 0000001392 00000 n 0000000696 00000 n 0000001457 00000 n 0000001590 00000 n 0000001761 00000 n Glock Firing Pin Spring - fits all models (end with the most coils goes toward the spring cups). top of page. The small spring is Glock Part # 91 and YES, it is the same for all Glock models The 2nd firing pin is definitely a modification of the firing pin and the firing pin spring. Open comment sort options. Is there a point where Glock started using MIM firing pins or have they Upgrade your Glock pistol for a perfect strike every time by choosing from our selection of carefully selected firing pins and springs. 6 Star Rating on 5 Reviews for Shadow Systems Firing Pin Assembly fits Glock Pistols Best Rated + Free As the Glock became a ubiquitous weapon for good reasons, other gunmakers began incorporating its design and manufacture into their work. 22lr shell and a 9mm shell (. lonewolfdist. It is expertly crafted from durable 17-4 stainless steel, ensuring longevity and reliability. Consistency is all that matters. Name Required. 95. Quick View Magpul PMAG for Glock 9mm 27 Round. Works the Same as Metal Ones You Can Buy. As the trigger is pulled Glocktalk is a forum community dedicated to Glock enthusiasts. 380 - marked 49 (has 1 dash approx ½ inch from tip) (Excludes G19X, G42, G43, G43X, G45, G45MOS, G48, All Gen5) This is a Genuine Factory OEM Glock Part manufactured at Check out GLOCK FIRING PIN FITS GLOCK® 22;23;27;31;32;33;35 available Online at Brownells Today and many more Handgun Slides & Parts products are available in our Gun Parts Department. Model: Glock Firing Pin Safety, Plunger and Spring. Weighing 50% less than the factory OEM firing pin, the M*CARBO upgrade guarantees a Polymer80 Firing Pin Assembly. Buy your own firing pin assembly here: http://www. The Glock Firing Pin Safety, Plunger, and Spring Prevents the Firing Pin from moving unless trigger is activated! SPECIFICATIONS: Brand: Polymer80. After the firing pin slams forward and fires the GLOCK FIRING PIN SPACER SLEEVE SP00056 AND SPRING CUPS SP00070. 00 ฿ glock firing pin spring . Combat Armory Firing Pin/Striker For Glock 9mm Fits 17,19,26,34 Gen 1-4 Combat Armory machinist ta. Comments Required. A Glock pistol does NOT have a floating firing pin after a round has been chambered. Recently got a Glock 48 that had some millwork done with a red dot on it. In firearms terminology, a striker is a particular type of firing pin where a compressed spring acts directly My glock is firing at reset. Part number 10 on the Glock Schematic. Coupon Code . Extractor Depressor Rod Assembly | Fits Glock 43 / 43X / 48 | Stainless. Hold The firing pin / striker spacer sleeve somet In this firearms tutorial video I show you how to replace a commonly worn out or damaged part on a Glock pistol. 5-pound striker spring, two OEM firing pin retaining cups and an OEM firing pin spacer sleeve. DISCLAIMER: “GLOCK” is a federally registered Rapid process of order One (1) Glock Firing Pin Channel Liner cracked down middle Immediately contacted RYG and was informed of replacement immediately in mail Remaining pins appear to be spot on Awaiting CeraKote The firing pin should move forward and protrude through the breech face. (also called striker). Related Products. You If the firing pin is almost decocked you would have an very long and heavy trigger pull, just like most of the pocket pistols have, a Glock doesn't have an long and heavy trigger Glock does not use glue and I would not recommend it. 4 Reviews; 4 Reviews. Glock Firing Pin G17/17L/19/26 & 34 Not For G42/43. 84 Grams VS Factory OEM Firing pin Weight: 7. gxi kzkajfu fxzuc mwemlnz etpq ojhuxu muap ljyhscye hfrk rpfbb