The Jack

An oversized integral trigger guard A beveled magazine flare that helps you load as quickly and efficiently as possible Machined top to bottom from 7075-T6 aluminum, a peak-strength corrosion-resistant aluminum alloy A hard coat anodize finish per MIL-A-8625, the anodizing model for model for most military and aerospace products Full compatibility with all mil-spec internal parts Full compatibility with all other aftermarket mil-spec upper receivers Full compatibility with PMags, Hex mags and other standard capacity magazines Multi caliber mark