The 2A Armament AR10 Full Mass Carrier (FMC) was designed and manufactured as a high-quality, full mass bolt carrier group for LR-.308 DPMS style rifles. We manufacture the carrier and bolt in-house to ensure fit and function.

Features:

• Carrier: 8620 steel, heat treated, Black Nitride.
• Bolt: 9310 steel, heat treated, MP, Cryo'd, Black Nitride.
• Extractor: machined, heat treated, Black Nitride.
• Carrier key: machined, heat treated, Black Nitride, staked screws.
• Weight: 1 lbs 1 oz assembled.
• Product of the great state of Idaho, MADE IN THE U.S.A

NOTE: Does not support the use of forward assist. This BCG is compatible with full auto weapon systems.

COMPATIBILITY NOTICE: Some 3rd party skeletonized upper receivers have the bore surface compromised that the bolt carrier slides on. 2A Armament does not recommend the use of these upper receivers due to a non-continuous slide surface that can cause binding and cycling related issues. 2A Armament cannot guarantee flawless fit and function in a 3rd party skeletonized upper receiver.