The Firepower F4-D is an electric airsoft rifle that performs solidly whether used for light airsoft skirmishes or casual backyard plinking. This gun is extremely light in weight due to it's plastic body and is comfortable to carry for extended skirmishes. The rifle fires in full-automatic mode only and has a monolithic & quad Weaver/Picatinny rail for mounting optional shooting accessories. The F4-D features a removable stock that is also adjustable when attached to the gun, a high-capacity 500 rd magazine and a shot velocity of 200 fps (using .20g BBs). Attach a gun sling on the sling mounts for easy transport on the battlefield. The adjustable hop-up unit also lets you fine tune the gun's accuracy for faraway targets.