re: #109 c6gunner

Well that’s also nonsense. Or at least it was the last time
I worked with the US military - back in ‘05. Your boys gave me a very nice M4 with an M68 CCO, and it fired full-auto just fine. Everyone in my platoon was given weapons capable of firing full auto, so I’ a bit skeptical of your claim.

Here is the information on the primary weapon used by the military the M-16 rifle A1 - A-4.
The M16A2 rifle entered service in the 1980s, chambered to fire the standard NATO cartridge, the Belgian-designed M855/M856 cartridge.[3] The M16A2 is a select-fire rifle (semi-automatic fire, three-round-burst fire) incorporating design elements requested by the Marine Corps:[3] an adjustable, windage rear-sight; a stock 5/8-inch longer; heavier barrel; case deflector for left-hand shooters; and cylindrical hand guards.[3] The fire mode selector is on the receiver’s left side. The M16A2 is still the primary rifle in the US Navy, Coast Guard, Air Force, and still is in heavy use in the Army and Marine Corps.

The M16A3 rifle is an M16A2 rifle with an M16A1’s fire-mode control (semi-automatic fire, automatic fire) used only by the U.S. Navy.

The M16A4 rifle was standard issue for the United States Marine Corps in Operation Iraqi Freedom; it replaced the M16A2 in front line units. In the US Army, the M16A2 rifle is being supplemented with two rifle models, the M16A4 and the M4 Carbine, as the standard issue Assault rifle. The M16A4 rifle has a flat-top receiver developed for the M4 Carbine, a handguard with four Picatinny rails for mounting a sight, laser, night vision device, forward handgrip, removable handle, and a flashlight.