The Sharps Bros Overthrow is the perfect option for those looking for a unique and eye catching firearm. The open mag well helmet design, with dents, sword gashes and crack lines, give it a battle hardened and worn appearance. Leave it anodized black, give it a Spartan style, a Viking theme ... the customization opportunities with this one are endless. FeaturesMachined top to bottom from 7075-T6 aluminum, a peak-strength corrosion-resistant aluminum alloyA hard coat anodize finish per MIL-A-8625, the anodizing model for most military and aerospace productsFull compatibility with all mil-spec internal partsFull compatibility with all other aftermarket mil-spec upper receiversFull compatibility with GI standard issue magazines as well as PMagsMulti caliber mark