SAA - M16 / M4 Complete Nickel Boron M16 Style Bolt Carrier Group - 2 Pack

Product Description SAA - M16 / M4 Complete Nickel Boron M16 Style Bolt Carrier Group  A completely assembled, ready to install M16/4 Bolt and Carrier System. Radically improves the performance of your M16 / AR-15 and eliminates the need to apply oil or grease to treated parts for the life of the weapon. Nickel Boron treated parts include: Bolt Carrier, Bolt, & Bolt Components Quality features include: Caliber: .223/5.56 Nickle Boron Carrier Matte Nickle Boron Finish Bolt Material: 9310 Carrier Material: 8620 M16 Full Auto Style Carrier Nickel Boron Bolt, Carrier key, & bolt components Mil-Spec Gas Rings Mil-Spec Staked Gas Key  Fully assembled All Parts Made in the USA.