The M4-A1 carbine machine gun was developed and produced for the United States government by Colt Firearms. This Airsoft BB Gun Model is Manufactured by CYBERGUN under official license, the COLT is a full 1:1 size airsoft rifle replica of the real thing. The COLT M4-A1 is manufactured in the new legal black and translucent toughened ABS anti-shock resin plastic, which has been carefully balanced so that screws and extra parts remain black. The COLT has an ergo friendly design suitable for both left and right handed users. With its adjustable shoulder stock fully extended the COLT has a full length of 86.5cm. The COLT has a steel barrel with a decent body weight for increased sturdiness, which also provides the user with a realistic feel to the gun. The COLT has a spring powered slide action cocking mechanism with a safety catch, which makes the M4-A1 inexpensive and easily maintained; as it requires no gas or batteries to operate. The M4-A1 features the BAXS shooting system which will make the gun very effective in target competitions. We recommend only using 6mm high quality BB ammo with this assault rifle.