Noun
FMJ (plural FMJs)
(firearms) Abbreviation of full metal jacket.
Among the raffle prizes are a one-night stay at Home2 Suites, waterpark passes for Great Wolf Lodge, a membership at FMJ Armory, gift cards for local restaurants, a High Museum of Art membership and a Wild Leap Brew Co. package. Source: Internet
FMJ bullets constructed with a steel penetrator in the nose, the composition, thickness, and relative weights of the jackets, penetrators, and cores are quite variable, as are the types and position of the cannelures. Source: Internet
For self-defense purposes by private citizens only FMJ and soft point ammo is legal in handguns. Source: Internet
People say that FMJ was "real" or whatever and I'm I'm sure to some it was, but my dad thought it was almost cartoonish, but Platoon stuck with him. Source: Internet
The Gw Pat 90 round firing a 4.1 g (63 gr) FMJ bullet is optimized for use in 5.56 mm (.223 in) caliber barrels with a 254 mm (1:10 in) twist rate. Source: Internet
The bullet is a 4.1 g (63 gr) tombac jacketed FMJ projectile with a G1 ballistic coefficient of 0.331 (ICAO) / 0.337 (Army Metro). Source: Internet