This is an example of the SR-25 semi-automatic rifle as designed by Reed Knight and Eugene Stoner. These rifles used the Stoner direct impingement gas system like the AR-15/M16 family of rifles, only in 7.62 NATO like the early AR-10. Introduced in 1990, the SR-25 serves as the basis for the U.S. Army M110 and U.S. Navy/U.S.M.C. Mk 11 Mod 0 sniper rifles. These have the same configuration, safety and handling techniques as the M16/M4 and it is fitted with a heavy free-floating target weight barrel with a low profile M110/Mk 11 style double rail gas block. Fitted with a Leupold Vari-X III 4.5x14 Tactical scope. The upper receiver and handguard also has the full-length Mil-Std 1913, Picatinny rail on top for mounting sights, with three additional rails on the other sides of the handguard. The top rail has a folding rear back up sight with a front sight that folds down into the front end of the rail. The lower receiver has the makers marks (KAC) on the magazine well and has the standard fixed synthetic M16A2 buttstock with butt trap storage compartment. It includes one detachable sling swivel, three rail covers, one 20 round magazine, and leather sling. Provenance: The Steven Preston Military Collection