In some embodiments, a tunable recoil assembly is provided. The tunable recoil assembly may include a guide rod having a front end, a length, and a rear end; one or more springs around the length of the guide rod; and a removable cap releasably coupled to one of the ends of the guide rod. In some embodiments, the removable cap may be retained using a spring force, and may be slidingly coupled, twistingly coupled, or otherwise releasably coupled to the one of the ends of the guide rod.