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Wiktionary
m-16

n. (context US English) A lightweight assault rifle, originating from the Vietnam War period

Wikipedia
M-16 (album)

M-16 is the tenth studio album by German thrash metal band Sodom, released on 22 October 2001 by Steamhammer Records. The album is a concept album about the Vietnam War and is named after the rifle used by many U.S. soldiers during the war.

Usage examples of "m-16".

Leaning against the hood was a body with an M-16 in his hands, watching both sides of the bend.

Once free, I jumped back and got the M-16 on him with just my left hand.

I pulled back the cocking piece on the M-16 just to make sure there was a round in the chamber, and that both of us hadn’t fucked up.

It would take us at least ninety seconds to make that distance over muddy ground, and that’s a very long time for an M-16 to have you in its sights.

She knew a single burst from an M-16 could kill all three of us, and if we were spread out, we’d be that much harder to hit.

I’d find that out soon, but the priority was to check if the Mosin Nagant or M-16 were still in the Land Cruiser.

The M-16 was in his right hand, and the muzzle was trailing down alongside his calf.

I scrabbled around in the mud for the M-16, then started to remove Blue’s chest harness.

As soon as I got to the Land Cruiser I dumped the gear in the footwell, then jammed the M-16 down between the passenger seat and the door before I closed it.

I finally parked up on the side of the road, dragged out the dried-out chest harnesses, the M-16, and the fuel can, then tabbed back toward the river with the gear dangling off me like a badly packed Cub Scout.

Finally, after rechecking chamber on the M-16, I sat on the fuel can for a minute or two longer, mentally adjusting and tuning myself in to the new environment.

He, too, was dressed in a green fatigue top, but had black baggy pants, an M-16 over his shoulder and belt kit.

The M-16, like the Beretta listed by several number, was listed as func­tionally reliable but not the most accurate of the several M-16s logged.

As Michael Rourke's hand lingered on the butt of the M-16, he recalled something Mao Tse Tung was credited with saying: "

The Ameri­can M-16 was primitive, but satisfactory, although he would have preferred a weapon of German design, even one of similar vintage as these five centuries old mu­seum pieces, perhaps the Heckler & Koch G-3.