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Product Discontinued by Manufacturer

2A Armament Full Mass Bolt Carrier Group (BCG) has been discontinued by 2A Armament and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, Bolt Carrier Groups yourself to try and find the perfect replacement for you!

Product Info for 2A Armament Full Mass Bolt Carrier Group (BCG)

The 2A Armament Full Mass Carrier (FMC) Bolt Carrier Group BCG was designed as a high-quality, full mass Bolt Carrier Group BCG, with an emphasis on enhanced weight distribution. By relocating the bulk of carrier mass to the tail, the FMC keeps the firearm in a more balanced state. Weight that would normally be over the magazine well is now over the pistol grip on an AR-15 rifle when at rest. The distribution of weight is further utilized during the firing cycle as the FMC reciprocates along the plane located within the pocket of the shooters shoulder and primary support hand, instead of out in front between the magazine well, and primary support hand. The FMC can give the shooter an extremely reliable full mass Bolt Carrier Group BCG, with a weight distribution advantage over standard carriers on the market.image

Features of 2A Armament Full Mass Bolt Carrier Group BCG, Nitride:

  • Carrier: 8620 steel, heat treated, QPQ Nitride
  • Bolt: 9310 steel, heat treated, MPI, Cryo'd, QPQ Nitride
  • Rear body: 303 Stainless steel
  • Extractor: machined, heat treated, QPQ Nitride
  • Carrier key: machined, heat treated, QPQ Nitride, staked screws
  • Does not support the use of forward assist.
  • Full auto compatible.

Package Contents:

  • 2A Armament Full Mass Bolt Carrier Group

Gun Barrels

114 / 14
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Gun Parts and Accessories

130 / 30
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Gunsmithing Tools & Accessories

115 / 15
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Gun Triggers

116 / 16
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Magazine and Accessories

121 / 21
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Gun Sights

119 / 19
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Gun Stocks

117 / 17
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Mounts, Rings and Accessories

120 / 20
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Related Products to 2A Armament Full Mass Bolt Carrier Group (BCG)

2A Armament Full Mass Bolt Carrier Group (BCG) Unavailable & Discontinued Models

List of Unorderable Models

  • 2A Armament Full Mass Bolt Carrier Group BCG, Black, Milspec, 2A-FMBCG-S , MPN: 2A-FMBCG-S , UPC: 854361006412 , Code: 2CU-BCG-FMBCGRP-2A-FMBCG-S
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Last updated 2026-08-26 UTC.