Tokyo Marui M&P9 GBB Pistol - Black Gas Blow Back Pistol with Semi-Automatic Shooting Mode  New Generation Military & Police Pistol  Innovative Hop-Up Thumb Dial located inside the gun (can see after dissemble the slide)  Realistic Detail Marking Slide with Wave Cutting Design On Rear  White Dot Front & Rear Sight  20mm Picatinny Under Rail for tactical accessories (e.g. flashlight / laser)  Full Metal 25 round Loading Capacity One-Piece Magazine  Come with Three Different size selective selective back straps (Small, Medium and Large)  Disassemble procedure is as the same as the real steel