Here's a field ready carbine length AEG from Classic Army. This rifle comes with everything you need and to get started and is easy to customize. The rifle has a full length top rail with included flip up sights. The long top rail allows for adding virtually any optic you may desire. The keymod handguard is lightweight and offers plenty of real estate for adding rail sections. The crane stock houses the battery and is adjustable to six different positions. Internally the gun features a 9mm bushing full metal gearbox with an inline MOSFET trigger. The gearbox has a quick change spring making it easy to upgrade or downgrade the velocity of this gun (extra springs sold separately). The gun is LiPO ready out of the box. It also come stock with a 6.03 mm tightbore inner barrel. A battery and charger are included.
Inner Barrel Diameter: 6.03 mm
Piston: heat Treated Polymer
Gearbox: Full Metal with 9mm Bushing & Quick Change Spring System