The fully licensed ICS M4A1 features Olympic Arms trademarks, unique serial numbers, and ICS's legenard split version 2 gearbox. This iconic M4A1 rifle is a 1:1 scale replica of the renown Vietnam era AR and features extremely durable components. Built with full metal machined upper and lower receivers and barrel assembly with lightweight nylon-reinforced polymer hand-guard, grip, and full stock. this rifle is both lightweight and resilient. Firing at 350-360 FPS with 0.20g BBs in combination with an adjustable hop up and 375mm inner barrel, this rifle is a flexible choice for both CQB and field play. The split gearbox design offers a more realistic teardown of the rifle, easier maintenance and tech work, and super simple spring swaps for changing the FPS depending on field limitations and requirements.