Technically it should be "MM16" for Military Model. But as you can see, saying or writing "M--" is much easier. "M" stands for military model.
M1a1 Abrahms
M1A1 Abrahms Tank.
US Military weapons should be marked with the US Ordnance "Burning Bomb" mark. You might also check with the Auto Ordnance company for possible serial number traces. Submachineguns forums, such as subgun may also have some information on serial number ranges for the M1A1.
The M1A1 Carbine was an American semi-automatic, gas operated, magazine fed, shoulder weapon designed as a modified varient of the standard M1 Carbine, the difference between the two models is that the M1A1 has a retractable steel wire stock, making it more compact and lighter than the M1 Carbine, while the M1 Carbine had a standard solid wood rifle stock. The M1A1 was issued primarily to American Army paratroopers in Europe due to its light weight, compact wire stock. The M1A1 was fed from a detachable box magazine that contained 15 .30 carbine cartridges, the same as the regular M1 Carbine.
M1A1 Abrams....yeah.....it's Americas MBT(Main Battle Tank)
M1A1 Thompson, Colt 1911, M1A1 Grand, and M1A1 Carbines (For Foot Solders)
the m1a1 was the military version of the gun....typically with a straight magazine and a smooth forestock. the typwriter was the gun that was popular with the mafia. it has a drum mag typically and a built in foregrip on the forestock. both magazines are interchangeable on the realsteel. internals on the realsteel were the same in both
Chuck Norris invented the M1A1 Abrams tank after one of his movies because he had nothing else to do.
no
m1 garand or the m1a1 carbine were the standard issue combat rifles. they were the semi automatic rifles of their time
Costco.
Of course they CAN