ARMS S.I.R. Rails
S.I.R. (Selective Integrated Rail) System
The Most Advanced Handguard in the World The A.R.M.S.® S.I.R. System has more unique and helpful features for the professional user than all other devices combined. Only the A.R.M.S.® S.I.R. System allows you to have dovetail rails where you want them and not where someone else decided for you. No other system keeps the weapon cool during firing as the A.R.M.S.® S.I.R. System
The new A.R.M.S.® S.I.R.® System offers more features than any other. This System allows you to place Dovetail Rails where you want them, not where others decide. Tired of dealing with hot, uncomfortable Dovetail Rails? No other system keeps the weapon as cool during firing. A.R.M.S.® designed the only free float barrel that does not require the barrel to be removed for installation, like on-tube designs.
Neither model requires any modification to the carbine except removal of your current hand guards and the Delta ring on the military S.I.R.(TM) model. The S.I.R.(TM) works with any type front sight.
No special tools are needed to install.
A simple coin can be used.
* Free Floating Barrel
* Multiple Dovetail Rails
* Lightweight and Rugged
* Designed to fit Mil-Spec flat -top Receivers
* Colt, Armalite and Bushmaster in the 5.56 carbine lengths
* True Quick Change Lower Hand Guard
* Green, Brown and Tan Hand Guard Options
The S.I.R.(TM) System accepts multiple accessories tailored to the needs of the user and was built to fit Mil-Spec flat top receivers from Colt, Armalite and Bushmaster in the 5.56 carbine lengths. Other flat top receivers may fit properly, but no guarantees or warrantees on any S.I.R.(TM) on any flat top receivers other than those listed above.
The modular receiver sleeving system is a hand guard universal mounting system that keeps the barrel completely uninhibited while offering a solid lightweight platform. This allows you mount virtually any accessory like Thermal Imager's, LASER's, Night Vision, Optical Sight, M203, etc.
A.R.M.S.® #45M A.R.M.S.® #45C
| M4 Carbine (Commercial) | |
A.R.M.S.® #45M
| M4 Carbine (Military-No Delta Ring) | |
A.R.M.S.® #46SC (Slim)
| M4 Carbine (Commercial) | |
A.R.M.S.® #46SM (Slim)
| M4 Carbine (Military-No Delta Ring) | |
A.R.M.S.® #50C Bi-Level
| M4 Carbine (Commercial) | |
A.R.M.S.® #50M Bi-Level
| M4 Carbine (Military-No Delta Ring) | |
| Carry Handle | |
| Carry Handle Carbine M4 (Commercial) | |
| Mid Length | |
| (Military-No Delta Ring) | |
| Mid Length Carbine M4 | |
| (Military-No Delta Ring) | |
| Full Length M16 (Commercial) | |
| Full Length M16 (Mil-No Delta Ring) | |