Frag Out! Magazine
Issue link: https://fragout.uberflip.com/i/958224
technical data Troy XM177E2 Colt XM177E2 (Model 629) Caliber: 5.56 mm x 45 NATO (.223 Rem.) Total weight: 2767 g 2400 g Overall length: 847/762 mm 840/755 mm Barrel length: 317.5 mm 292 mm Barrel twist: 1:7 (178 mm) IN ACTION