- ICS M4 S.I.R. With Crane Stock
- Length: 778 - 889 mm
- Barrel length: 375 mm
- Fire mode: Electric Semi/Full Automatic
- Velocity: 330 FPS
- Material: Metal, Nylon Fibre
- Battery: Mini, Twin, Crane Type
- Magazine capacity: 450
- Gearbox: Slpit Version 2
- Includes AEG, magazine, instructions DVD, 1000 BBs, cleaning rod
ICS' Colt M4 A1 S.I.R is an ideal model for players who crave a decked out M4 style AEG. The model is made entirely out of High Density Nylon Fibre materials.
The carry handle has been replaced with a removable ARMS type rear sight and the front sight is a PRI type one. Both rear and front sight are adjustable.
The handguard bears a standard 20 mm Picatinny rail system that allows the attachment of tactical accessories. It is modelled after the ARMS Selective Integrated Rail found at the M468 model by Barrett. The Crane stock can be adjusted to 6 different positions accordings to player's will.
The model bears 2 sling attachment points, that allow the installation of every single, two or three point sling.
This model carries ICS' split gearbox that is construct by two parts- upper gearbox and lower gearbox. The entire top cylinder and piston assembly is separate from the gear and motor section. Modular piston assemblies increase the convenient of upgrade the firepower in a skirmish. You can just push the forward assist to release the spring tension before storage, the intimate consideration designed is accurate the spring back to right condition to avoid the weary caused by spring tension.
The package includes the M4A1 SIR, its metal High Capacity 450 BBs magazine, a cleaning rod, a bottle of 1000 BBs and an instructions DVD.
The M4 carbine is a family of firearms that was derived from earlier carbine versions of the M16 rifle, which was in turn derived from the original AR-15 rifle that Eugene Stoner designed and ArmaLite made. The M4 is a shorter and lighter variant of the M16A2 assault rifle. It is a gas-operated, magazine-fed, selective fire, shoulder-fired weapon with a telescoping stock and 14.5 in (370 mm) barrel to ease close quarters combat. Like the rest of the M16 family, it fires the .223 caliber, or 5.56mm NATO round.