Bushmaster Flat Top UPPER .223 REM/5.56 NATO 16" POST-BAN
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This highly accessorized Upper Receiver/Barrel Assembly features a 16" Chrome Lined Chrome Moly Steel Fluted Barrel with Milled Gas Block. A Four Rail Free-Float Tubular Forend combines with the A3 type "Flat-top" Upper Receiver to provide all the Picatinny rails necessary for mounting sights, scopes or accessories. The B.M.A.S. Rear Flip-up Sight is a dual aperture detachable unit with windage knob calibrated to 1/2 Minute of Adjustment. The B.M.A.S. Front Flip-up Sight clamps around the milled front gas block and incorporates an elevation adjustable front sight post - all ready for your lower receiver.