My 226 legion sao will do a slide drop if you throw the mag in hard enough No need for slide release. I started out with a 9mm, then bought a .40 slide, and then even had a custom open/carry optic slide built. A buddy of mine works at Sig, and managed to get his hands on a few extra X5 parts, and we converted the factory 226 legion into a 226 x5. Beautiful shooting gun. Told to use all Mecgar mags.