Thor Inc. AR-15 M4 5/56 Nato Barrel 16" 1:8 Twist Chrome Line M4BAR
AR-15 M4 5/56 Nato Barrel 16" 1:8 Twist Chrome Line Thor Inc 4140 Chrome Moly. Nitride treated Chrome lined M4 profile barrel with .750" diameter carbine gas block location..Manufacturer: TGM Model...