FX DRS SHP Plenum Kit

If you have already purchased an FX DRS rifle in either the 500 or 600 version, you can easily upgrade your rifle with this plenum kit. The plenum is the pre-chamber where the regulated pressure for your shots is stored. Depending on what you plan to achieve, you will need a larger plenum, which includes replacing the existing barrel with a longer one, shooting heavy ammunition or increasing the speed of the projectile.

The SHP Plenum Kit expands your plenum capacity to 63 cc, which is significantly larger than the HP plenum that is standard on the 500 and 600 versions.