The M-1, for one (7 letters)

{ Answer }

CARBINE

{ Related Clues }

Rifle
Semiautomatic rifle
Semiautomatic weapon
Spencer, e.g.
Sten gun

{ Tags }

carbine, eg, gun, m, rifle, semiautomatic, spencer, sten, weapon, 1

{ Notes }

The answer CARBINE is rarely seen, appearing only about once every 2400 puzzles.

{ Definition }

CARBINE as a noun:

1. light automatic rifle