The Spikes Tactical Punisher stripped lower receiver is an excellent way to add a splash of personality to your very own custom AR-15 rifle. This multi-caliber lower can accommodate a variety of different calibers and is precision-machined from 7075-T6 aluminum, ensuring that it is both strong and lightweight. It features an integrated trigger guard and a flared magwell for easy magazine changes. The receiver also has M4 feed ramps for reliable feeding and a hardcoat anodized finish for added durability.