The SPR (Special Purpose Rifle) was developed as an accurized version of the AR-15 rifle. It was developed for the military to give soldiers capabilities like that of a Designated Marksman, while allowing them to carry more ammunition on their loadout compared to that of a DMR loadout. The Sonoran Armament SA-15 SPR Mod 1 gives you the ability to accurately engage targets out to 600 yards and beyond. This rifle is packed full of high-end features to help make your long-range shot. Whether you want to push the limits of the 5.56 Nato, or are taking shots on game/predators at range, the SA-15 SPR Mod 1 will get the job done. We wanted to ensure that whether you are using this rifle out in the field, or just taking it to the range, that it gives you the performance and reliability you can count on.