During the Korean War time frame the Marine Corps had four different rifle qualification badges.
1) Expert Rifleman Badge
2) Sharpshooter Badge
3) Marksman Bar
4) U. S. Marine Corps Basic Qualification Badge
The Basic Qualification Badge had a variety bars that would be attached by small rings between the top bar and the badge. Marine Corps qualification bars typically had an abbreviated qualification level followed by the weapon (i.e. EX - CARBINE, EX. T.S.M.G., EX. BAYONET, EX-PISTOL, SS - PISTOL, S.S. RIFLE). Marines did however wear Army style bars that had just the weapon name and no qualification level.
The Marine Corps also had a Pistol Expert Badge. Additionally, they may have had a Pistol Sharpshooter Badge, but it may have been unofficial.
Edited by Bruce Linz, 12 July 2018 - 06:01 AM.