APF Armory M16 Bolt Carrier Group SP4 5.56/223/300 BLK Blue Steel

This bolt carrier group is manufactured to military specifications and features components that are heat treated, shot peened, and precision machined. The SP4 coating provides high hardness, wear resistance, and extremely low friction, contributing to minimal maintenance requirements and reliable operation in extreme environments.

Features

• Compatible with 5.56 NATO, .223 Remington, and .300 Blackout AR platforms
• SP4 hybrid DLC coating for high hardness (2500-3500 HV) and wear resistance
• Reduced friction and improved lubricity for minimal maintenance
• Tested in extreme cold and desert environments with no lubrication
• Hand polished bolt carrier with chrome lined bore
• Staked gas key bolt with gas rings, firing pin cam pin, and retaining pin included
• Made in the USA to military specifications

Specifications

• Brand: APF Armory - Alex Pro Firearms
• MPN: RPUP-717-BS
• UPC: 787790165453
• Color: Blued Steel
• Finish: SP4 hybrid DLC
• Material: Steel
• Bolt: Carpenter 158, shot peened, heat treated, SP4 coated
• Carrier: SAE 8620, heat treated, SP4 coated, full auto
• Extractor: CNC machined, shot peened, heat treated, SP4 coated
• Firing Pin: Swiss machined, heat treated, precision ground, SP4 coated
• Gas Key: CNC machined, heat treated, chrome lined, torqued and staked, SP4 coated
• Cam Pin: Swiss machined, heat treated, SP4 coated