The M4 SD is the latest offering from Lancer Tacticals’ line of affordable and high quality AEGs. This carbine features a durable nylon reinforced polymer frame, metal barrel assembly, full metal gearbox and ergonomically designed polymer pistol grip. The specially designed motor grip ensures perfect grip in any battle conditions and greatly reduces player fatigue by improving overall maneuverability. The adjustable crane style stock with attached sling mount opens up many options for CQB and long range skirmishes. The M4 SD carbine has an extensive integrated Keymod on the top of the rifle and quad-rails on the handguard, making it available for customization options such as optic sights or tactical lights and grips. Use the flip-up front and rear sight to quickly and accurately zero in your targets without the assistance of an optic accessory. The M4 SD features Lancer Tacticals’ 2nd Generation Version 2 Gearboxes with metal parts, which can be easily upgraded or modified to user preference. These gearboxes come out swinging with an upgraded motor with 8mm ball bearings to ensure the gears spin more efficiently with less friction and less need for repairs. Lancer Tactical made sure this rifle comes skirmish ready by including a vertical grip, 9.6v Nunchuck style battery and standard wall charger with every package.The 390 FPS (0.20g BB) ensures you can legally use this rifle in most regulated indoor and CQB arenas, while still being a viable competitor in long range engagements! The integrated Quick Spring Change System gives you the option to easily adjust the rifle velocity by adding different springs. Low resistance wiring is used throughout this whole rifle, to greatly increase smooth electrical flow from the battery. Use the adjustable rotary style hop-up to account for range and wind conditions, making sure no enemy is safe! Lancer Tactical thought of everything and made this rifle both unique and very functional.