#html-body [data-pb-style=HSK7THU]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll;border-style:none;border-width:1px;border-radius:0;margin:0 0 10px;padding:10px}#html-body [data-pb-style=RG4IUGE]{border-style:none;border-width:1px;border-radius:0;margin:0;padding:0}Want to stand out from the crowd? Sharps Bros. has created a series of stripped lowers that will certainly do the job. The Jack is a top notch high quality lower receiver with a viciously appealing half skull molded into the magwell. The Jack - Gen2 features include a threaded bolt catch pin, reduced weight, and improved styling. 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 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 Weight: 10.7 oz