CSI Full Size Polymer Body XR-5 Advanced Main Battle Rifle (Color: RED) Everyone has an M4 or an M4 variant. CSI XR-5 Advanced Main Battle Rifle. The XR-5 is unlike any other rifle currently on the market today. Built around the traditionally durable version 2 gearbox, the XR-5s relation to the M4 ends there. The XR-5 features a futuristic injection molded polymer body, molded with the ergonomics of the user in mind. The fire controls are similar to the favored M4 rifle ensuring that there is little learning curve when transition from your old battle rifle to the XR-5 Advanced Main Battle Rifle. To top it off the XR-5 features top, bottom and side accessory rails for mounting all 20mm accessories such as vertical grips, weapon lights or grenade launchers. Features - Injection molded polymer body - Integrated top rail provides a stable and reliable platform for optics or other accessories - Lower 20mm accessory rail provides a mounting capability for vertical grips, weapon lights or grenade launchers - Side rails provide additional mounting space - Drop free magazine - Full metal version 2 gearbox provides the end user with easy ability to upgrade internal components - Compatible with most popular M4/M16 type magazines - Front and rear flip up sights - Length: 790mm-870mm Adjustable Weight: 7.75 LBs Inner Barrel: 363mm Magazine Capacity: 200 rd Hi-Capacity. Works with, G&G, Tokyo Marui and other compatible M4 / M16 Series Airsoft AEG Magazines Muzzle Velocity: 350~370 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 Battery: 7.4vv Small Type recommended (Battery not included. Wired to front with small Tamiya connector) Hopup: Yes, Adjustable Package Includes: Gun, Magazine, Manual