RUC (RAINIER URBAN CARBINE) MOD 4
5.56 NATO cal., GPO, mid-length gas system, 16 in. CMV Nitride barrel, Superlative Arms adj. gas piston operating system, FHV2 flash hider, forged receivers, ALG QMS trigger, Kriss USA steel flip-up sights, B5 Systems Bravo stock, Rainier A...