The HK 416 A5 AEG is a licensed, authentic replica of the real 416 A5 rifle made by world renowned firearms manufacturer Heckler & Koch. Favored by Special Forces for its Over The Beach (OTB) capability and remarkable reliability, the H&K 416 is a proven weapons platform that features all the improvements of a modern rifle coupled with the familiarity of a proven weapons system. The VFC Avalon gearbox is an improved Tokyo Marui Spec Version 2 with low friction high quality steel bearings, built-in MOSFET, and quick change spring system; driving the gearbox is a high torque neodymium magnet motor. Length: 720mm-800mm, Adjustable Inner Barrel: 300mm Magazine Capacity: 320rd Hi-Capacity. Compatible with Matrix, G&G, Tokyo Marui and other similar M4 / M16 Series Airsoft AEG Magazines Muzzle Velocity: 370~390 FPS (Measured with 0.20g BBs) Thread Direction: 14mm Negative Gearbox: Ver 2 Full Metal, Fully Upgradeable Motor: Long Type Fire Modes: Semi/Full-Auto, Safety Package Includes: Gun, Magazine, Manual Battery: 11.1v Small Buffer Tube LiPo recommended (Battery not included) Hopup: Yes, Adjustable Need extra magazines? - Elite Force High Capacity Magazine (Link->https://store.ssairsoft.com/products/ef-m4-hi-cap-mag) - QRS High Capacity Magazine (Link->https://store.ssairsoft.com/products/ef-qrs-hi-cap-mag-300r-blk) We recommend this battery: - Elite Force 11.1v LiPo 900mAh 15C Brick Battery (Link->https://store.ssairsoft.com/collections/11-1v-battery/products/ef-11-1v-900mah-stick) Perfect sight for the avalon is: - Axeon Optics RG49 Multi-Reticle Reflex Sight (Link->https://store.ssairsoft.com/collections/dot-sight/products/axeon-rg49-multi-reticle-reflex-sight) The bb's we like with this is: - Elite Force 6mm 5000 Count Biodegradable BB's 0.25g (Link->https://store.ssairsoft.com/collections/airsoft-0-25g-bbs/products/elite-force-25g-5000-bio) - Elite Force 6mm BBS 2700 (Link->https://store.ssairsoft.com/products/ef-25g-2700)