KWA AEG 2.5 VM4 Full Metal Ronin 6 Airsoft PDW with Keymod Handguard - Length: 527.05mm - 647.7mm, Adjustable Weight: 5.5lbs Inner Barrel: 200.02mm Magazine Capacity: 30/120 round variable capacity KWA magazines with cut-off, compatible with other M4 style magazine (without cut off) Muzzle Velocity: 330 - 380 FPS (Measured with 0.20g BBs) Thread Direction: 14mm Negative Gearbox: KWA V2.5 gearbox Motor: Long Type Fire Modes: Semi/Full-Auto, Safety Battery: 7.4V Lipo Small Type recommended (Battery not included. Wired to buffer tube with small Tamiya connector) Hopup: Yes, Adjustable Package Includes: Gun, Magazine