AR-45 Standard 45 ACP BCG (Glock & Colt Compatible)


  • Manufacturer: New Frontier Armory
  • Model: AR-45 Standard 45 ACP BCG
  • Caliber: .45 ACP
  • -Dealer Price will appear in cart when logged in

In stock

SKU: BCG-45 Category:



  • Manufacturer: New Frontier Armory
  • Model: AR-45 Standard 45 ACP BCG
  • Caliber: .45 ACP
  • OAL: 6.75″
  • Weight: 14.5 oz


AR-45 Standard 45 ACP BCG

  • US Made 8620 steel with nitride finish
  • Precision milled for use with Glock magazine fed lower receivers
  • M-16 cut for use in transferable full-auto MGs, dealer post sample MGs or other legal machine guns (ALL BATFE RULES APPLY)

**NOTE:  Many Aftermarket drop in triggers use modified hammers which may not reset properly, or hit the firing pin square on the carrier which could cause firing pins to bind and snap.  We recommend using only MILSPEC hammers with any 9mm, .40, or .45 blowback bolt carrier groups.

The New Frontier Armory AR-45 Bolt Carrier Group is proudly MADE IN THE USA by hard working American men and women.


Additional information

Weight1.00 lbs
Dimensions7.25 × 1.5 × 1 in


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Questions and answers of the customers

  1. 0 votes

  2. 0 votes

    6.75" OAL of the BCG, the other dimensions are listed for shipping purposes only.

  3. 0 votes

    Elftman PCC, ALG ACT, KE arms SLT-1 or SLT-2.  Any of these three should work and have been used in competition builds.

  4. 0 votes
    Q Should I use a 10oz buffer with this bolt carrier? answer now
    Asked by tbrandonjr on February 21, 2019 5:11 pm

    We recommend 8 oz buffers for our .45 builds.

  5. 1 vote
    Asked by ANDREW KOSS on February 5, 2019 4:06 pm
    Answered by the admin

    Yes, however, to properly extract .45 you may have to modify the port door on your upper depending on the make and model.

  6. 0 votes
    Q Will this work with CMMG, MKG .45 ACP? answer now
    Asked by Nane on December 27, 2018 10:13 am
    Answered by the admin

    It is designed to work with blowback systems only, not locking bolt systems.

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