Aero Precision's upgraded .308/7.62 Nickel Boron (NiB) BCG is glass of ice cold water on a hot day for your M5 or other AR-308 build. Machined at tight tolerances and with a pristine NiB coating of the highest quality, you will not be dissapointed with this upgrade in your rifle.  When comparing Nickel Boron vs. Nitride or Phosphate, you'll find Nickel Boron is quite durable, corrosion resistant, and extremely lubricious, resulting in fewer cycling failures, and cleanup being a breeze after a day at the range.  When comparing apples to apples, this is one of the best value nickel boron BCGs on the market.


Features and Specifications:

No Aero 'A' Logo on the carrier
Carrier is machined from 8620 Steel
Bolt is machined from 9310 Steel
Nickel Boron (NiB) coated inside and out (Bolt, Carrier, and Gas Key)
Magnetic Particle Inspected (MPI)
Forward Assist serrations
Weight: 17.60oz
Made in the USA!