NEMO Arms .223/5.56 Bolt Carrier Group for AR-16 Steel

NEMO Arms .223/5.56 Bolt Carrier Group for AR-16 Steel. The bolt carrier group is the heart of your rifle. Selecting the best construction and coatings will ensure that you have lasting reliability and accuracy. Specifications for NEMO Arms .223/5.56 Bolt Carrier Group for AR-15: Manufacturer: NEMO Arms Finish: Nickel Boron Fabric/Material: 8620 Steel Gun Make: AR Platform Gun Model: AR-15 Bolt Material: 9310 Steel Carrier Material: 8620 Steel Features of NEMO Arms .223/5.56 Bolt Carrier Group for AR-15 Case hardened 8620 steel bolt carrier nickel boron coated ground surfaces to meet exacting dimensional and surface finish tolerances Case hardened 9310 steel bolt nickel boron coated magnetic particle inspected ground surfaces to meet exacting dimensional and surface finish tolerances Hard chrome plated and ground firing pin Nickel boron coated gas key staked 4130 steel NIB coated cam pin NIB coated extractor with spring rubber insert and o-ring support Forward assist serrations Package Contents: NEMO Arms .223/5.56 Bolt Carrier Group for AR-15 NEMO Arms BL-556-BCG: .223/5.56 Bolt Carrier Group for AR-16 Steel