FN USA FN 15 Military Collector Series M16A4 Complete Upper Receiver Assembly 5.56mm 20" Barrel
<p>Own a piece of firearm history from the makers of the world’s most battle-proven firearms. The FN 15® Military Collector Series M16 upper receiver assembly is an authentic reproduction of the original made to FN’s and the U.S. military’s exacting specifications. A 20-inch 1:7 RH button-broached barrel is chrome-lined and chambered in 5.56x45mm NATO. The upper is furnished with a complete M16-style MIL-SPEC bolt carrier group including a HPT/MPI-tested bolt made from Carpenter 158 steel. A Knight’s Armament M5RAS quad-rail and adapter covers finish off the authentic reproduction making a perfect match for any M16-style build.</p><ul> <li><strong>CALIBER:</strong> 5.56x45mm</li> <li><strong>WEIGHT:</strong> 5.61 Lbs.</li> <li><strong>BARREL LENGTH:</strong> 20"</li> <li><strong>OPERATION:</strong> DIRECT IMPINGEMENT RIFLE LENGTH GAS SYSTEM</li> <li><strong>TWIST RATE:</strong> 1:7 RH</li> <li><strong>SIGHTS:</strong> A2-style front adjustable rear sight</li></ul>