A: Yes it's compatible. We have had several customers with BCA bogs use our bolt assemblies with no issues.

A: Yes it will fit any mil-spec AR-15 bolt carrier.

A: No its for right hand ejection. You will need a left handed bolt assembly for your rifle.

A: The extractors we sell separately are the same extractors used on our bolt assemblies.

A: Should work fine with any side charger that doesn't use a proprietary bolt assembly.

A: Bolt assembly is made specifically for the 7.62x39. We do not allow for 5.56 bolts to be milled them to another caliber. ALL BOLT ASSEMBLIES and EXTRACTORS regardless of caliber is milled from stock bar and machined to that specific caliber. We do try to keep a little more meat in the 7.62x39, but there are certain things that will cause premature failures and we list those under the DISCLAIMER tab of the products page.

A: Our bolts start out from bar stock and machined as 7.62x39, we do not use other caliber bolts to manufacturer other caliber bolts. You can read about our bolts and material etc under the products page. As for thicker walls, it's impossible to create thicker walls than the 5.56 since the 7.62x39 is a 30 caliber in mil-spec AR-15 upper.

A: Yes you can either purchase just the AR-15 7.62x39 Melonite QPQ Bolt: https://www.blackriflearms.com/AR-15-762x39-Melonite-QPQ-Bolt-Assembly-_p_239.html
Or the
AR 7.62x39 Melonite QPQ Bolt Assembly and Enhanced Firing Pin Combo Assembly: https://www.blackriflearms.com/7.62x39BoltandEnhancedFiringPinCombo

A: Yes our bolt assemblies work with their Bolt Carrier, but their bolt assemblies have not been consistently machined properly so other mfg extractors hang up in the barrel extension. We had the opportunity to work with a customer with a BCA 7.62x39BCG and we know why extractors won't work (customer tried 5 other MFG companies extractor for this caliber and they all hung up in the barrel extension) so our customer had us change out BCA bolt assembly for one of ours.

A: It will fit any AR-15 mil-spec bolt carrier, including FailZero AR-15 bolt carrier.

A: Bolts are designed to work with mil-spec AR-15 barrel extension. Our bolts work with our barrels that have mil-spec barrel extension with 30 caliber feed ramps.

A: Our bolts are made from the beginning as 7.62x39 bolts. As stated in product's description: Machined completely in one operation; this eliminates tolerance and repeatability issues that arise from the multiple fixturing processes used by other manufacturers

A: While we do have more meat on our extractors we can't make any guarantees when the extractor or lugs will fail because other forces come into play such as gassing of the operating system and certain ammunition such as Tula or Red Army (the cases do not shrink properly and puts undue stress on the extractors and single wide barrel extensions have no support and will cause lugs to break. Also we are seeing a lot of melonited/nitrided barrel extensions lugs being deformed overtime and causing issues also. We have no control over these issues, but the way we do ourbarrels and the way we gas our uppers we have some demo rifles with over 5,000 rounds.

A: Our AR-15 7.62x39 bolt assemblies are for AR-15 7.62x39 rifles that utilizes AR-15 7.62x39 magazines. PSA KS47 utilizes AK magazines and due to this the bolt assemblies on PSA KS47 are machined for the AK magazines so they are designed differently and you can't utilize an AR-15 bolt assembly in a platform that utilizes AK magazines.

A: It's a complete bolt assembly minus the firing pin.

A: They are in stock now.

A: This is just for the bolt assembly and nothing else. It sounds like if you are looking for a bolt carrier group which is the bolt carrier, bolt assembly, cam pin, firing pin and retaining pin. We have BCG (bolt carrier groups) but those are out of stock, at the moment.

A: A limited came in stock today. I don't expect them to last too long.

A: Our extractors will work with our bolt assemblies (we are B.R.A. Black Rifle Arms). Our extractors will not work with B.C.A which is Bear Creek Arsenal that is a totally different company.

A: No this is just for the bolt assembly. If you are looking for the combo pack the part # is: 150503

A: It will work in any BCG that is mil-spec. So if BCA side charging BCG is per mil-spec dimensions and doesn't use a proprietary bolt assembly then you can use this bolt assembly in their BCG.

A: No this AR 7.62x39 bolt assembly is not compatible with a KS47. The lugs on the KS47 is designed for the AK mags and therefore will not work with an AR 7.62x39 bolt that is designed for use with AR magazines.

A: No, our bolts do not come from YM.

A: No this AR 7.62x39 bolt assembly is not compatible with a KS47. The lugs on the KS47 is designed for the AK mags and therefore will not work with an AR 7.62x39 bolt that is designed for use with AR magazines.

A: If your Palmetto Arms AR47 utilizes AR15 components then this bolt assembly will work.

A: The supplier of our bolt assemblies uses a reputable metal company that does the HPT testing on their raw metals, and thus bolts are not marked as independent testing through manufacture is not done after machining. MPI testing is done in batches, while many mfg will engrave MPI on batch tested bolt assemblies we feel unless each bolt is tested it should not bear that marking.

A: We've have sold thousands of bolts. I have had to replace one bolt, and a few extractors, but for the amount we have sold it's a very low percentage of failures. Warranty is 6 months. If one is breaking extractors on a regular basis then something else is going on with the rifle such as the bolt trying to strip a casing out before it has had time to shrink, so one would need to slow the bolt carrier down.

A: Bolt assembly weights 1.52 oz.

A: This bolt assembly will fit any AR-15 Mil-Spec Bolt Carrier. We should have more in stock this week.

A: Bolt body produced from AISI 9310 VAR (Vacuum Arc Remelt), the highest standard bolt material made

Extractor produced from MIL-S-5000 steel and vacuum hardened

A: We state a "true" 7.62x39 bolt because we use the original specs of a .125" recess of the breach face of the bolt. Some in the industries think a 7.62x39 and a 6.5 Grendel have the same breach face which have lead to confusion and having some manufacturers headspacing barrels with a 6.5 Grendel breach face which is .135" which can lead to serious headspace issues.

One would still need to use an enhanced firing pin with standard 7.62x39 bolts for steel case ammunition.

A: Yes, we will be offering 5.56 melonited bolt assemblies to our product lineup in the near future.

A: The bolts themselves, outside of being Melonited QPQ, are a higher level of machining itself and the extractor is outstanding. Besides the machining and extractor alone, the finish is far superb than phosphate. Melonite diffuses into the surface of the steel metal. The benefits of Melonite QPQ are: wear resistance, corrosion resistance, lubricity and/or decreased coefficient of friction and fatigue strength.