Variable Mass Carrier includes 4 weights that can be installed at the rear of the carrier
Standard M16 weight = 11.328oz
Variable Mass Carrier Weight = 10.912oz
Weight 1 0.722 11.552oz total
Weight 2 0.738 11.808oz total
Weight 3 0.780 12.48oz total
Weight 4 0.832 13.312oz total
Perfect for tuning your system for use with suppressors and hotter or lighter loads. Weights are retained with a roll pin in the carrier. BCG disassembly is unaffected by the weight.
Not compatible with captured recoil springs like the JP SCSS when weights are installed.
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, and black nitride coated
- 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
- Sharp edges and rough finishes eliminated. Will NOT shred fingers and operates smoothly
- Made of same steel and using same processes as our National Match but to standard MILSPEC design
- 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 contact between cam pin and firing pin, enabling smoother operation of firing pin, bolt lugs and aft gas rings. The new cam pin socket also retains lubrication for extended operations.
- Also includes our recoil lug supported gas key