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308/7.62mm BOLT CARRIER GROUP FOR AR .308

308/7.62mm BOLT CARRIER GROUP FOR AR .308 Reviews & Ratings

Aero Precision’s .308 / 7.62 Bolt Carrier Group is the perfect firing mechanism for your big-bore rifle build. This high quality BCG features a mil-spec phosphate finish, is MPI/HPT and now includes a laser engraved Aero Precision 'A' logo!

CARRIER FEATURES:
  • Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt)
  • Finish: Mil-spec Phosphate coating
  • Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked
  • Firing Pin: Machined from 8740 steel and hard chrome coated
  • Forward Assist serrations
  • Laser engraved Aero Precision logo
  • Carrier fits AR .308 compatible style AR Uppers and Rifles


BOLT FEATURES:
  • Material: Case Hardened 9310 Steel
  • Finish: All bolt components are shot peened and phosphate coated
  • Extractor: Machined from 4340 Steel with double o-rings and double springs
  • Magnetic Particle Inspected and High Pressure Tested
  • High pressure bolt - external surfaces are CNC ground after heat treat for a precision fit and firing pin hole diameter is reduced to .070"
  • Multi-caliber bolt designed to function with .308, 7.62x51, .338 Federal and other .308 based cartridges.


BCG INCLUDES:
  • Bolt carrier
  • Complete bolt
  • Firing pin
  • Cam pin
  • Retaining pin
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5
Aero M5 BCG
Product as advertised
by Michael B. on December 01, 2023
Verified Purchase
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5
Head space works great with criterion ba
Not the rolls Royce of BCGs but it works and with all the issues people clame to have with AR 308 and AR 10 style builds in relation to headspace it seems reliability is a premium. I can personally attest to the fit and function of this bolt in an Aero M5 enhanced upper with a criterion barrel. I hope that helps someone looking to build.
by Ted on July 10, 2020
Was this review helpful? 1
5
reliable BCG
I've used other BCG's and this one has worked flawlessly on 4 builds I've done, tried using some other BCG's w/o the ridges for the forward assit. and they didn't do so well, only firing about 3 rounds only in a build for a friend so I traded out an extra Aero BCG I had on hand, no more trouble. For the usual price at Brownells and Aero Precision, I usual wait for a sale price of these at either site; best bang for the buck, these are it. No cons. Yes I do run-on sentences. These are just good basic BCG's, not expensive but well build and preform very well and worth the $, a lot of times I use Aero uppers
by Toccoa B. on August 27, 2018
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