New Out-of-Stock Rear Cap CNC Rail MP7 MARUI GBBR €0.00 The Rear Cap ProteK is CNC machined entirely from 7075 aluminum. High strength and finish. Allows you to mount a stock on a picatinny rail for your MP7 GBBR MARUI . This part replaces MGG1-7. This custom part is for picatinny mounting only. (The original stock will not be compatible). The Rear Cap Protek is delivered in “natural grey” color, the... View