- Full metal Version 2 gearbox - Full metal 8mm ball bearings - Full metal rear stock (foldable) - Enlarged trigger guard - Textured improved handguard - M249 SAW-style motor grip - Fully adjustable hop-up - Adjustable front and rear sights - Front and rear sling mounts - Side folding metal stock - Compatible w/ most M4 AEG magazinesSpecifications: Operation Electric AutomaticBuild Metal Receiver, Outer Barrel, Stock / Polymer Handguard, Motor GripFiring Modes Semi-automatic, Full-automatic, w/ Functional SafetyMuzzle Velocity 370 'oe 390 FPS (w/ 0.20g BBs)Gearbox Full Metal Version 2Magazine 450rd High Capacity MagazineBattery 9.6V Mini (not included)Inner Barrel Length 357 mmHop-Up AdjustableWeight 9 lbsOverall Length 26.5 in. / 36.5 in. (Folded / Extended)Color BLACK Airsoft rifle