The Evolution features one piece holster body construction, and steel reinforced rivet attachment and a protective sight channel. The paddle features a rubberized insert to provide both comfort and stability, a tension adjustment screw is incorporated to allow the user to customize the ease of presentation and the security of retention. Fits Charter Arms Boomer/Bulldog/Mag Pug/Pitbull (except .45 ACP); Ruger LCR all models fixed sights only/LCRx/Ruger SP101 any caliber (fixed sights only).