CMMG Model 55AD33B
5.56 NATO cal., GIO, 16 in. CHF chrome-lined barrel, 30 shot Magpul PMAG, mid-length low profile gas block, "F" marked front sight base and Magpul MBUS rear sight, Magpul MOE rifle length handguard, Mil-Spec 6-pos. Magpul MOE stoc...