• ARMS S.I.R. Rails

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    This item is out of stock
    This item is out of stock
    This item is out of stock
    This item is out of stock
    This item is out of stock
    This item is out of stock
    This item is out of stock

    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.® #45C S.I.R. (Selective Integrated Rail) Systems

    bullet M4 Carbine
    bullet (Commercial)
    bullet S.I.R.

    A.R.M.S.® #45M

    bullet M4 Carbine (Military-No Delta Ring)
    bullet S.I.R

    A.R.M.S.® #46SC (Slim)

    bullet M4 Carbine (Commercial)
    bullet S.I.R.

    A.R.M.S.® #46SM (Slim)

    bullet M4 Carbine (Military-No Delta Ring)
    bullet S.I.R.

    A.R.M.S.® #50C Bi-Level

    bullet M4 Carbine (Commercial)
    bullet S.I.R.

    A.R.M.S.® #50M Bi-Level

    bullet M4 Carbine (Military-No Delta Ring)
    bullet S.I.R.

    A.R.M.S.® #51A1/A2

    bullet Carry Handle
    bullet S.I.R.

    A.R.M.S.® #58C Bi-Level

    bullet Carry Handle Carbine M4
    bullet (Commercial)
    bullet S.I.R.

    A.R.M.S.® #58M Bi-Level

    bullet Mid Length
    bullet (Military-No Delta Ring)
    bullet S.I.R.

    A.R.M.S.® #58MOD Bi-Level

    bullet Mid Length Carbine M4
    bullet (Military-No Delta Ring)
    bullet S.I.R.

    A.R.M.S.® #59C Bi-Level

    bullet Full Length M16 (Commercial)
    bullet S.I.R.

    A.R.M.S.® #59M Bi-Level

    bullet Full Length M16 (Mil-No Delta Ring)
    bullet S.I.R.