Impact 737- Choose the action that the pros use! Impacts were the most popular action among the top 100 shooters in Precision Rifle Series for the 2018 to 2023 seasons. Impact shooters have won 6 out of the last 7 national series championships! Don't settle for pinned rails or recoil lugs. Our receiver body is a made out of one single piece of material, ensuring the most rigid end product with no chance of warping or your rail coming loose when you need it most.