MSAR 223 Rem. wBlack Finish - 20" Barrel, 30 Rounds, Synthetic, Black Stock
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The STG-E4 rifle is a gas operated semi-automatic bull pup rifle featuring a quick interchangeable barrel available in various lengths. The high strength alloy receiver on these models is standard issue with a 9" picatinny rail. The 16" or 20" quick detachable chrome lined barrel makes it suitable for accurate and casual target shooting or hunting or personal defense.