6MM ARC - Hornady Precision Hunter 103GR ELD-X - 20 Rounds KM1-E The ProComp 556 duplicates the

The ProComp 556 duplicates the design of the SureFire SOCOM SFMB-556-1/2-28 muzzle brake

High-density foam grips

Internal volume ~ 44 in³ Additional Resources

Specs for MCH-HC:

High lubricity finish options

6MM ARC - Hornady Precision Hunter 103GR ELD-X - 20 Rounds KM1-E The ProComp 556 duplicates theThe versatile 6mm ARC does much of what larger cartridges can and everything that smaller cartridges can't. Designed to meet the needs of the world's toughest critics, the 6mm ARC utilizes efficient, high BC bullets to deliver unprecedented performance from the AR 15 platform. Commercial 6mm ARC offerings will feature bullets selected to deliver ideal performance for hunting, match shooting and personal protection applications. The 6mm ARC achieves