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The Innovative Arms Warfighter Adjustable Receiver is a robust, mechanically simple upper that allows users to easily control the amount of gas going into a rifle's operating system: Very handy for rifles with quick attach/detach sound suppressors.
Easy on the fly of gas systems is a handy feature to have when you've got quick attach/detach sound suppressors which greatly change the amount of gas in a rifle's operating system. You no longer have to worry about a huge overpressure in gas causing damage and wear to your rifle, or even case head separations! Gas block based systems work very well, but fouling, heat, and access can be a problem and force users to use easy to lose tools as a result.
The Innovative Arms, LLC WAR makes gas system adjustment just as easy as putting on a taking off a modern sound suppressor with QD capability. At Weapon Outfitters we now have new colors available of cerakoted uppers: FDE and Burnt Bronze