- New
This issued U.S. M9 bayonet is a rugged military surplus knife designed around the well-known M9 pattern used with the M16 and M4 rifle bayonet system. Built as both a field knife and rifle bayonet, the M9 design has become one of the most recognizable modern U.S. military blades, valued by collectors, reenactors, outdoorsmen, and surplus enthusiasts.