FInd All Product Handguns Filtered (1) Filters Reset all× 17× 19 M.O.S.× 19X× 26× 30X Tomcat× AP5P-N× Combat Commander× K Frame× Mil-Spec× MR556 A4× P320 X× Sidekick× 16.5000× SearchSearch× Category AR Pistols(1) Model— MR556 A4 MR556 A4(1) Manufacturer Heckler & Koch / H&K(1) Action Semi-Auto(1) Caliber .223 REM/5.56 NATO(1) Barrel Length— 16.5000 16.5000(1) 2.9000(1) 3.43"(1) 3.6000(1) 4(1) 4.0100(1) 4.02"(2) 4.2500(3) 4.49"(2) 4.5"(1) 4.7000(1) 5.8"(1) Show (1) Cancel Showing the single result Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low
