Fully licensed Hecker and Koch (H&K) MP5 with official trademarks Enhanced full metal upper receiver and nylon polymer lower receiver Unique serial numbering etched on receiver Full-automatic and semi-automatic fire selector modes 14mm CCW threaded 3-lug outer barrel for attaching flash hiders and mock suppressors Full metal ECS Avalon gearbox OEM by VFC A fixed stock as opposed to a retractable stock setup on an MP5A5 Hop-up adjustment accessible through locking open charging handle Fixed front and adjustable diopter rear sight Integrated MP5-style sling mount on stock Battery storage in the rear stock (just remove rear body pin and slide stock back) In the Box 1X Airsoft SMG 1X Magazine Specifications: Brand Elite ForceOperation Electric AutomaticBuild Metal Upper Receiver, Barrel / Nylon Polymer Lower Receiver, Motor Grip, Handguard, StockFiring Modes Semi-Automatic, Full-Automatic, SafetyMuzzle Velocity 350 - 365 FPS (w/ 0.20g BBs)Gearbox Full Metal Version 2Battery 7.4V Stick LiPo (not included)Magazine Capacity 200 Rounds (High Capacity)Hop-Up Yes, AdjustableOuter Barrel Length 8Length 26.5Weight 5.5 lbsColor Black California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov