US Navy Mk 12 Special Purpose Rifle M16 rifle

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developed increase effective range of soldiers in designated marksman role, u.s. navy developed mark 12 special purpose rifle (spr). configurations in service vary, core of mark 12 spr 18 heavy barrel muzzle brake , free float tube. tube relieves pressure on barrel caused standard handguards , increases potential accuracy of system. common higher magnification optics ranging 6× power trijicon acog leupold mark 4 tactical rifle scopes. firing mark 262 mod 0 ammunition 77gr open tip match bullet, system has official effective range of 600+ meters. published reports of confirmed kills beyond 800 m iraq , afghanistan not uncommon.







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