The Meprolight RMR Picatinny Riser (Low, 0.87" saddle height) 901141044 is a precision CNC-machined 6061-T6 aluminum adapter, finished in matte black Type II hard-anodize, designed to mount any RMR-footprint pistol optic securely onto a standard MIL-STD-1913 (Picatinny) rifle or shotgun rail. Its low-rise profile ensures that the optic sits at 0.87 inches above the rail, ideal for low-view mounting or co-witnessing with iron sights. The riser features squared recoil stops to maintain zero under recoil, and it comes with Torx mounting screws that are pre-treated with Loctite for long-lasting stability and reliability.