Q: Standard Spare Bolt Carrier Buffer [+$10.00] Oversized Spare Bolt Carrier Buffer - Centers Carrier - Note: Out of Spec Receivers Can Have Binding Issues [+$10.00] what's different between the two
A: The oversized polymer buffer has a larger radius surface to center the bolt carrier group in the rifle.
Q: What’s the warranty on this bolt carrier?
A: Our bolt carrier and key have a limited lifetime warranty. Small parts have a 6 month limited warranty. To see full warranty information please see this link: https://blackriflearms.com/WARRANTY_ep_41-1.html
Q: I have a 7.62x39 upper ,and presume it has standard specs. Will your di bcg drop in without machining or head space issues
A: Our bolt carrier is mil-spec to dimensions so it will fit any AR-15 that is built to mil-spec. It is a drop-in ready BCG; however, we do advise end users to check headspace no matter who's barrel/bcg you purchase.
Q: Is this the right BCG for a 7.62x39 piston driven Ar?
A: No, all bolt carriers/bolt carrier groups we sell by themselves on the website are for Direct Impingement. If you need a spare piston carrier and have a piston conversion or piston upper of ours you can purchase one by calling it in. We will verify existing piston conversion/upper within our database and send you an invoice to pay. Since our piston bolt carriers are designed only to work with our piston systems we do not offer them as a standalone product to purchase on our website.
Q: I doubt it’s possible but I thought I’d ask considering the good reviews your bcg have. I usually run a law tactical folder on almost everything AR I shoot. Considering the buffer I doubt it’s possible to use the law tactical folding mechanism. Just curious if it’s been tried. Thanks
A: Due to the design of our Bolt Carrier with the polymer end the Law Tactical Folder is not compatible.
Q: Does the enhanced 7.62x39 bolt carrier come with the 7.62x39 Melonite QPQ Bolt Assembly ?
A: Yes all our BCG's come with a melonite bolt assembly. Under product 'Specifications' tab it will call out all materials, coatings etc as we try to give as much information as we can so customers can make an informed decision on our products.
As for the other questions we have removed it for further followup per an email as it concerns a piston build and we removed your phone number to keep your personal phone number protected.
Q: On the previous question about 7.62 x 39 working with the Grendel or .264 LBC. Was the answer yes it should work with a Grendel case because it is the parent round for the Grendel?
A: Be aware that there are some rogue 6.5 Grendel barrels out there reamed to use the 0.125 bolt. Contact the barrel manufacturer directly or work with a qualified gunsmith if you are unsure.
A: 7.62x39 is not interchangeable with a 6.5 Grendel, they have two different bolt faces. 7.62x39 has a .125" Bolt Face and the 6.5 Grendel and LBC 264 have a .136" Bolt Face. For a 6.5 BCG you would need this BCG: https://www.blackriflearms.com/M16-65-Grendel-Enhanced-Bolt-Carrier-Group-with-Buffer-Technology-_p_296.html
Q: Do you have a list of upper side chargers that your upper system will work with? What about DFA products? Thank you, -Hunter
A: Gibbz Arms and Spartan Side Charger with no modifications. The other side chargers on the market require bolt carrier modifications, we don't recommend any side chargers that require bolt carrier modifications. DFA folders require the bolt carrier to be modified to work with their proprietary buffer and spring assembly.
Q: I own one of your 7.62x 39 enhanced bolt s.....it is running fine....as far as spares go are you seeing any broken bolt lugs?at what round count do you recommend bolt replacement. Thanks
A: We always suggest having a spare bolt assembly and extractor. We see little issues with broken bolt lugs, you mostly see failures with the extractors. An overgassed firearm will cause more stress on the extractor and premature extractor failures in this caliber.
Q: Will this work with a JP silent capture buffer?
A: JP Silent Capture Spring is not compatible with our carriers buffers. In order to use JP Silent Capture Spring, the end user would need to make modifications to the carrier's integrated buffer.