It is an exact replica of the famous assault rifle that is in use with the U.S. Military today. It comes with a retractable stock that makes this gun great for CQB and outdoor. The working charging handle gives this gun a realistic action that even higher priced guns do not have. The M4 RIS comes with a M4 length RIS unit that will allow the user to mount accessories like flashlights, lasers, fore grip, etc. The RIS also includes a battery box that can house an 8.4v 1500Mah custom made battery. ECHO 1 AEGs are fully upgradeable and compatible with most aftermarket external and internal parts. This airsoft gun includes a metal hi-capacity magazine and is also compatible with other major brands of standard and high capacity after market magazines. This gun is a must buy for those looking for a good priced starter gun.

Features:

• Full metal V2 gearbox.
• Steel gears.
• Metal spring guide, bushings, & outer barrel.
• Retractable LE stock
• M4 Length RIS unit
• Working charging handle
• Metal hi-cap magazine
• Stag Arms trademarks
• Large battery box
• Flip-up rear sight
• Inner Barrel Length: 363mm
• Barrel Caliber: 6mm
• BB Capacity: 300rounds
• Initial BB Speed: 360fps
• Battery Type: Battery Box(Custom)
• Battery charge time: 5 hours.
• Package Includes: Manual, Hi-cap Magazine, Loader, Cleaning Rod, 1500mah 8.4v battery pack, 300 mah charger.

We recommend only using high quality .20g and .25g BBs for higher performance, better accuracy and to prolong the life of your gun.