FMK Firearms AR1 Extreme Black Multi Caliber AR-15 Polymer Lower

FMK Firearms AR1 Extreme Features The FMK Firearms AR1 Extreme lower receiver is a multi-caliber foundation for the AR-15 platform manufactured in the USA using a high-impact proprietary composite polymer. This state-of-the-art material provides superior strength and unmatched durability while remaining extremely lightweight at only 4.3oz. It is engineered to be the strongest composite polymer lower on the market offering a reliable alternative to traditional aluminum receivers. Designed for versatility this lower is compatible with most standard AR-15 lower parts kits grips and stocks and it can accept mil-spec upper receivers up to .50 Beowulf. The AR1 Extreme is the perfect choice for builders looking to minimize weight without sacrificing the structural integrity of their firearm. Its advanced polymer construction ensures it can withstand the rigors of use while providing a corrosion-resistant and durable finish. FMK Firearms AR1 Extreme Specifications Manufacturer: FMK Firearms Model: AR1 Extreme Subtype: Lowers Category: Stripped Lowers Finish: Black Material: Polymer Gun Model: AR-15 Gun Type: AR Platform Weight: 0.4375 lbs