Mark 3 KnifeUS-american field knife / From Wikipedia, the free encyclopedia The Ontario Mark 3 Navy (MKIII) is the standard knife for the US Navy and Navy SEALs. This article does not cite any sources. (December 2011)
The Ontario Mark 3 Navy (MKIII) is the standard knife for the US Navy and Navy SEALs. This article does not cite any sources. (December 2011)