AR-15 BCG
Non-FFL parts and accessories. Real-time supplier inventory. Written for shoppers and for AI answers.
A bolt carrier group (BCG) is the bolt, carrier, firing pin, cam pin, and retainer. 5.56 BCGs are not 9mm PCC BCGs and not AR-10 / .308 BCGs. “M16” or “full auto” profile on a semi carrier is a common title; it is still a semi rifle part in this catalog, not a machine gun.
MPI/HPT, phosphate, nitride, and nickel boron are finishes and inspections, not calibers. Search AR15 BCG or BOLT CARRIER. Confirm 5.56 or 9mm in the title. For a 9mm upper, use a 9mm blowback BCG — see AR-15 to 9mm.
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Live supplier inventory. Out-of-stock items are hidden.
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FZ AR-15 Bolt Carrier Group · FailZero · $158.99 -
Faxon 5.56 Gunner Lightweight 9310 BCG Nitride · Faxon Firearms · $230.99 -
Q AR-15 Two Piece BCG · Q · $400.99 -
BAD M4/M16 Standard BCG · Battle Arms Development · $152.99 -
KAK AR-9 BCG 9mm Enhanced Nitride Black · KAK Industry · $153.99 -
Faxon Gen 2 9mm PCC Full-Mass BCG · Faxon Firearms · $152.99 -
BAD 9mm AR-15 Bolt Carrier Group Black · Battle Arms Development · $187.99
Questions
Will an AR-15 BCG fit an AR-10?
No. 5.56 carriers are not .308 / DPMS / SR-25 carriers.
Is a 9mm AR BCG the same as 5.56?
No. PCC 9mm bolts are a different SKU. Confirm 5.56 or 9mm in the title.
Does M16 in the title mean full auto?
On a semi carrier it usually means the carrier profile. This store does not sell machine guns.