Aug with 5 mags! High strength, light-weight polymer receiver w/ heavy duty metal barrel assembly Built-in AUG carry handle with 20mm compatible rail. Spacing of rail may not accept certain optics QD barrel system for easy maintenance Built-in folding vertical fore grip and sling swivel attachment point Locking charging handle and mock bolt for easy hop-up adjustment Cross-bolt safety bar also functions as fire selector Rubber covers over bolt covers prevents dirt and dust getting into hop-up area FPS Range: 390-420 Specifications: Length: 770mm Weight: 3900g Inner Barrel: 490mm Outer Barrel: 18.5" Magazine Capacity: 330rd Hi-Capacity. Works with Tokyo Marui and other compatible AUG Series Airsoft AEG Magazines Thread Direction: 14mm Negative Gearbox: Ver 3 Full Metal, Fully Upgradeable Motor: Short Type Fire Modes: Full-Auto, Safety Package Includes: Gun, Magazine Battery: 7.4v 1000mAh LiPo Small Type recommended (Battery not included, wired to the rear with deans) Hopup: Yes, Adjustable