Lapco Paintball Hushshot BSA Barrel Extension for BigShot Assault or Str8Shot Barrels Loaders The MAGPRO comes preset with Used Paintball Guns The MAGPRO comes preset with a standard output of 800psi with the ability to increase the pressure to 920 psi through the use of shims packaged with the regulator with other mid and low pressure spring kits available Newly designed non slip eva (ethylene vinyl acetate) provides a well padded back panel that additionally protects the lumbar and back area HushShot BSA is a HushShot Barrel Extension for any of the BigShot Assault or Str8Shot barrels This barrel extension is 8" long and reduces the noise created from every shot