Jade-Sterling Steel provides carbon, alloy, and stainless steel bar stock, including value add options for firearm component manufacturers. We are a stocking distributor of GBQ Steel including 4140 CrMo, 4140/50R, 4150 CRMOV, 416, and 416R. Cut and chamfer options available. Our steel is used in the manufacturing of bolt carrier groups, barrels, gas keys, slides, and many more parts. JSG Precision is an OEM partner in manufacturing Mil-Spec Gas Keys and pistol slides. (less)