Semi-Auto/ Full Auto M16 Complete bolt carrier group made by Young Manufacturing Inc. using MILSPEC quality steel on our in-house CNC machines. All carriers are then heat-treated, hard-chromed and...

Semi-Auto/ Full Auto M16 Complete bolt carrier group made by Young Manufacturing Inc. using MILSPEC quality steel on our in-house CNC machines. All carriers are then heat-treated, hard-chromed and each carrier is chrome-lined in the bolt throat. - Standard MIL-SPEC carrier with additional care taken during machining process - Sharp edges and rough finishes eliminated. Will NOT shred fingers and operates smoothly - Hard chromed after heat treatment - Made of same steel and using same processes...

Semi-Auto/ Full Auto M16 Complete bolt carrier group made by Young Manufacturing Inc. using MILSPEC quality steel on our in-house CNC machines. All carriers are then heat-treated, hard-chromed and...

Semi-Auto/ Full Auto M16 Complete bolt carrier group made by Young Manufacturing Inc. using MILSPEC quality steel on our in-house CNC machines. All carriers are then heat-treated, hard-chromed and each carrier is chrome-lined in the bolt throat. - No Forward Assist Serrations.  This can work in an upper with forward assist, but the forward assist will do nothing.  Perfect for your slick side upper build. - Standard MIL-SPEC carrier with additional care taken during machining process...

We've come to the end of a big production run of chrome bolt groups and its time to sell off all the fall outs for cosmetic and engraving issues.  These bolt groups are 100% functional, they're...

We've come to the end of a big production run of chrome bolt groups and its time to sell off all the fall outs for cosmetic and engraving issues.  These bolt groups are 100% functional, they're just not up to our normal standards for finish or engraving.Semi-Auto/ Full Auto M16 Complete bolt carrier group made by Young Manufacturing Inc. using MILSPEC quality steel on our in-house CNC machines. All carriers are then heat-treated, hard-chromed and each carrier is chrome-lined in the bolt...

- Sharp edges and rough finishes eliminated. Will NOT shred fingers and operates smoothly - Hard chromed after heat treatment - The HMB Bolt by HM Defense eliminates the pass through cam pin hole...

- Sharp edges and rough finishes eliminated. Will NOT shred fingers and operates smoothly - Hard chromed after heat treatment - The HMB Bolt by HM Defense eliminates the pass through cam pin hole and replaces it with a cam pin socket and radiused cam pin design. The new patented design eliminates the natural weak point of Mil-Spec bolts by significantly increasing the amount of metal (and strength) at the cam pin location. The result- NO MORE BROKEN BOLTS! The HMB Bolt also reduces...

Semi-Auto/ Full Auto M16 Complete bolt carrier group made by Young Manufacturing Inc. using MILSPEC quality steel on our in-house CNC machines. All carriers are then heat-treated, hard-chromed and...

Semi-Auto/ Full Auto M16 Complete bolt carrier group made by Young Manufacturing Inc. using MILSPEC quality steel on our in-house CNC machines. All carriers are then heat-treated, hard-chromed and each carrier is chrome-lined in the bolt throat. - Standard MIL-SPEC carrier with additional care taken during machining process - Sharp edges and rough finishes eliminated. Will NOT shred fingers and operates smoothly - Hard chromed after heat treatment - Made of same steel and using same processes...

7.62x39mm BoltFor use with standard dimension AR-15 Uppers and Lowers.  NOT for use with CMMG Mutant and other large/mid-frame size AR variants.-Semi-Auto/ Full Auto M16 bolt carrier group...

7.62x39mm BoltFor use with standard dimension AR-15 Uppers and Lowers.  NOT for use with CMMG Mutant and other large/mid-frame size AR variants.-Semi-Auto/ Full Auto M16 bolt carrier group made by Young Manufacturing Inc. using MILSPEC 8620 quality steel on in-house CNC machines. All carriers are then heat-treated, and Black Nitride coated - Standard MIL-SPEC carrier with additional care taken during machining process - Sharp edges and rough finishes eliminated. Will NOT shred...

7.62x39mm Bolt Black Nitride Coated For use with standard dimension AR-15 bolt carriers.   NOT for use with CMMG Mutant and other large/mid-frame size AR variants. ...

7.62x39mm Bolt Black Nitride Coated For use with standard dimension AR-15 bolt carriers.   NOT for use with CMMG Mutant and other large/mid-frame size AR variants.

Semi-Auto/ Full Auto M16 bolt carrier group made using MILSPEC 8620 quality steel on in-house CNC machines. All carriers are then heat-treated, and Black Nitride coated - Standard MIL-SPEC carrier...

Semi-Auto/ Full Auto M16 bolt carrier group made using MILSPEC 8620 quality steel on in-house CNC machines. All carriers are then heat-treated, and Black Nitride coated - Standard MIL-SPEC carrier with additional care taken during machining process - Sharp edges and rough finishes eliminated. Will NOT shred fingers and operates smoothly - Standard Cam Pin - Standard Gas Key (torqued to spec, not staked)