The Huma-Air Matador regulator is a high-quality bench rest quantity regulator that easily installs into the EDgun Matador. The system includes a low profile regulator and plenum extension will seriously increase the power on the R5. R5M, and Lelya system This is a serious upgrade for the R5/R5M/Lelya system that will allow the gun to run a lower regulator pressure (115-120 BAR) and increase the power substantially. This regulator will fit the R5 30, R5M (all calibers) and the Lelya 2.0 (all calibers)