When the National Guard first started the Wilson Matches, (National Guard Championships) they were using M14s and 1911a1s. The Winner of the Rifle Matches received a nice trophy M14 and and pistol team winner go a trophy 1911.
The ATF threw a hissy fit saying the M14s were machine guns. The NGMTU gave the winner of the M14 a permanent hand receipt, the rifle wasn't his but he got to keep it. After that the NG went back to giving M1s.
Never heard of anyone getting machined gun down with a special presentation grade M14 but Hey, we know ATF is all knowing.