Areios Defense AR-10 Bolt Carrier Group (.308)
We have one of the best BCG's on the market. Testing has shown our bolt to hit 55,000 rounds and continue to keep shooting. You can't be more satisfied than that.
- All parts are heat treated per MIL-SPEC standards. Blasted for uniform finish and oiled to prevent rusting.
- Carriers are made out of 8620. Case hardened and blasted (CASE HARDEN TO 15N89.5-91.0 .010-.015" DEEP.)
- Bolt are produced from 8620 or 9310 and are MPI(magnetic particle inspected) (CARBURIZE TO .010-.014" DEEP HARDNESS 15N 89 TO 90.5) Parts are blasted and shot peen
- Gas Keys are made from 4340 or 4140 (HEAT TREAT TO 26-32 RC.) Blasted and shot peen
- Extractors are made from 4140 or 4340 (HEAT TREAT TO 42-44 RC.) Blasted and shot peen
- Made in USA