gtag('set', {'user_id': 'USER_ID'}); // Set the user ID using signed-in user_id. 9AM-5PM CST Sat Thanks for subscribing to our newsletter! NOT Bushmaster. “The Bushmaster ACR was brought to market in 2010 with the promise of unparalleled adaptability. Bushmaster ACR Barrel Conversion Kit has been discontinued by Bushmaster and is no longer available. Reviews There are no reviews yet. All Bushmaster ACR barrels are hammer forged from 4150 chrome moly vanadium, and are Melonite treated for durability. var rp=loadCSS.relpreload={};rp.support=(function(){var ret;try{ret=w.document.createElement("link").relList.supports("preload")}catch(e){ret=!1} var links=w.document.getElementsByTagName("link");for(var i=0;i