AR/M16 5.56/.223/.300 BLACKOUT caliber complete Black Nitrided Bolt Carrier Group. Nitride QPQ Finish, shot peened, MPI Tested, 9310 Tool Steel Bolt; 8620 M16 carrier, Properly staked 4140 Machined Gas Key fastened with Hardened Grade 8 Fasteners. $66.99 + tax. NO TRADES. Shipping rates will vary depending on zip code. By appointment only, please call or email for date and time. Thank you