You'd have to contact the manufacturer's and provide product serial numbers. However, they may not provide this information, due to it being a military contract.
M16 with a M203 grenade launcher
M16 with a M203 grenade launcher
The "Grenade Gun" found on the M16 rifle is called the M203 grenade launcher. It is used by manually opening the loading port, inserting a 40mm grenade, closing the port, and depressing a separate trigger. The M203 will then discharge its grenade at the intended target. Further detail is not (in my opinion) necessary for this answer.
You don't list a sn. AFAIK, there is no list of all of them available to the public.
in modern times an m203 can be shot from an m203 grenade laucher. i noticed that it said japan ww2 times so there is also a mod to an m1 grand where using force lauches an m1 grenade. m203 are usaly attached to m4 and m16 but other guns also can be modded for this.
From US Army FM for the M203: The M203 grenade launcher is a lightweight, single-shot, breech-loaded, pump action (sliding barrel), shoulder-fired weapon that is attached to an M16 rifle series (Figure 3-1), or the M4 carbine series with the M203A1 (Figure 3-2), and M4 carbine series with the rail system (Figure 3-3).
1961- date
FN F2000, UMP 45, Steyr AUG, PP2000, M9, M16, M203, Masterkey, Rpg, AT4
Not really too much to tell. The M16 has a longer barrel, and the projectiles will leave the barrel with greater velocity for it. The M4 has the collapsible buttstock and 14.5 inch barrel, so it would be the easier of the two to utilise in urban terrain and such. The M16's longer gas system is the more reliable of the two, and the muzzle flash and noise of the M16 is reduced. The operating mechanism is the exact same, except that the M4 and M16 won't use the same return spring or buffer.
Colt. Licences to manufacture it were also granted to Fabrique Nationale, Chartered Industries of Singapore, and Daewoo Heavy Industries.
Yes. Principle differences between the M16 and M4 include: M16 has a 20 inch barrel while the M4 has 14.5 inch barrel, M16 has a fixed buttstock while the M4 has a retractable six-position buttstock. Virtually all M4s have a 20 millimeter accessory rail, while only M16s after the A3 variant have the rail. The M4 carbine also has a stepdown in the barrel to accommodate the M203 grenade launcher due to its thicker barrel profile. Performance-wise, the M4 is also less accurate at range due to its shorter barrel, but is easier to maneuver in cramped environments.
no, Mattel making military rifles is an urban legend, and comes from two sources - the first being a replica M16 they made, and the second being that they were contracted to manufacture plastic furniture for the M16 rifles, and this furniture bore the name of the manufacturer.