"National Match" is the term for rifles built by or modified to specs put out by the arsenals. I believe it started with the 1903 Springfields and applied to the M1 Garand and the M14. There never was a "National Match" spec put out for the M16 and the modifications were largely driven by the civilians (aside from some early efforts at Rodman Labs). We in the highpower competitive world chuckle at the proliferation of "National Match" labeled AR parts and rifles (Some of which are clearly not Service Rifle Competition legal) when there really is not a NM standard.

Last edited by ChrisF; 04/19/18.