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Posted: 7/11/2001 4:11:45 AM EST
I remember seeing XM177E2 to designate the shorty/carbine years ago in the 60s 70s 80s for the M16. But where and whom started the M4 designate thingie?
Link Posted: 7/11/2001 4:20:43 AM EST
Originally Posted By bmwguy: I remember seeing XM177E2 to designate the shorty/carbine years ago in the 60s 70s 80s for the M16. But where and whom started the M4 designate thingie?
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I believe it came about in the early 1990's when it was found that a 14.5" barrel was the best length for the shorty. The distance from the gas port to the muzzle on the M-4 is the same as it is on the full sized M-16's, they still however eat up extractors. I carry a complete spare bolt in the storage handgrip for this reason. The better M4 is with the standard selector, "safe, semi, full", the burst packs appear to fail when you need them most!
Link Posted: 7/11/2001 5:38:48 AM EST
I think it's just an incremented number. M1 carbine, M2 carbine same as M1 but select fire I believe, M3 carbine I think has rails for some hug IR scope, so I would think they just added 1 and came up with M4 carbine.
Link Posted: 7/11/2001 6:05:15 AM EST
[Last Edit: 7/11/2001 6:03:49 AM EST by McUZI]
It was first called the XM4 Abu-Dhabi Carbine-They deleted the FA option, added burst option, and called it the M4.
Link Posted: 7/11/2001 6:54:58 AM EST
[Last Edit: 7/11/2001 6:52:45 AM EST by TimJ]
Link Posted: 7/11/2001 7:17:31 AM EST
Link Posted: 7/11/2001 7:26:06 AM EST
[Last Edit: 7/11/2001 7:27:15 AM EST by steve m]
from what i understand this is what happened: the 14.5 bbl m16 was simply called the colt m16a1 carbine, the only official adoption of this varient was the phillipine army. only when the arab client wanted to stuff a marshmellow shooter under it, they colt, went to the stepped semi heavy barrel and then it became the model r727 abu dubai. so in reality we have some nameless arab prince to thank for the current configuration idea for our pet rifles. m4 was because the rifle was supposed to replace the aging m3 45cal submachine gun being used by tank crews. this way it could be sold better to jcos and the bean counters as a necessary item. steve
Link Posted: 7/11/2001 7:36:44 AM EST
Link Posted: 7/11/2001 10:50:22 PM EST
I think it's just an incremented number. M1 carbine, M2 carbine same as M1 but select fire I believe, M3 carbine I think has rails for some hug IR scope, so I would think they just added 1 and came up with M4 carbine.
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You are right with the M1 - M3. Makes sense. Just the 4th carbine the US Forces use.
Link Posted: 7/12/2001 6:00:39 AM EST
This just dawned on me. Maybe the prefix XM stands for experimental model? I remeber an XM something grenade launcher, under the barrel model. M as in M1 etc. i assume stands for model.
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