AR-10 308 Bolt Carrier Group BCG DPMS Profile
The Ballistic Industries AR-10 Bolt Carrier Groupincludes a complete 7.62mm bolt, firing pin, carrier and gas key. The group comes fully assembled with properly torqued and staked gas key. Made in the USA for us by a mil-spec contractor.  This Bolt Carrier Group is complete and ready to drop into your new AR10 build.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" DEEPHARDNESS 15N 89 TO 90.5) Parts are blasted and shot peened.Gas Keys are made from 4340 or 4140 (HEAT TREAT TO 26-32 RC.) Blasted and shot peenedExtractors are made from 4140 or 4340 (HEAT TREAT TO 42-44 RC.) Blasted and Shot peenLarge quantities and wholesale pricing available.