Finned Profile AR15 Carrier, Nitride

Finned Profile AR15 Carrier, Nitride. Build a Bolt Carrier Group. Like Build A Bear, But For Adults. If you purchase a Carrier, you'll receive just that, a complete carrier w/ staked gas key. If you Add a Bolt and Completion Kit, You will receive the a complete, assembled BCG with the Option you selected. KAK Industry Finned Profile Carrier. This unique carrier featurs a finned design, giving fouling a place to go, as well as looking retro like a old valve cover. Carrier- 8620 steel, outside rails, bolt runs, and gas bores ground to .0002 tolerances, nitride finish; Bolt- 9310 steel, outside diameters ground to .0002 tolerances, MPI test; Firing Pin- 8740 steel, Swiss turned, heat treated, chrome plated; Cam Pin – 4140 steel, Swiss turned, heat treated, nitride finish; Extractor- 4140 steel, fully machined, Phosphate coated; Extractor pin- S7 tool steel, ground, heat treated; Ejector- S7 tool steel, ground, heat treated; Gas key – 4130 steel, heat treated, secured with T25 torx fasteners, torqued to spec, staked with hydraulic staking machine; 9.5 oz; Machined in house and assembled using only the finest steels and components.