XWXS Tactical 20mm Weaver QD Scope Mount for PSG-1 MP5 G3 All Matt Black finish & Construct of Alloy Metal Install any red dot or scope onto this 20mm scope mount Specifications: Weight 145g Rail Length 105mm & 85mm Rail Type 20mm Weaver Scope Base Built Material Aluminum Alloy Color Black Matte Package contains: 20mm Weaver QD Scope Mount Base 4 PSG-1 MP5/G3 Series