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1/25/2018 7:38:29 AM
Posted: 12/24/2005 11:04:01 AM EST
Why can't AR15s have folding stocks? Or, why do Ar15s need a buffer tube but AK47s, MP5s, etc don't? What is the mechanical difference? Pics/diagrams would help, thanks.
Link Posted: 12/24/2005 11:18:09 AM EST
[Last Edit: 12/24/2005 11:32:06 AM EST by Gunzilla]
the AR buffer is also the recoil and operating spring... Other rife systems have the operating spring located in front of the action or telescoped to keep as much as possible forward (just a couple of examples). The buffer itself is not an absolute must, but the operating spring is. If yo utake a look at the ZM Weapons system, you can see one clever idea to put a folder on the AR.

ZM attaches the gas tube to the bolt and has the "slip coupling" up near the front site, then that attached tube/rod holds a forward moutned recoil/operating spring.

eta: The buffer tube design of the AR is one of the things that makes is so plesent to shoot, the *inline* design of the AR is almost unique to the rifle.

Here you can see the rcoil/operating spring for the AK, it terminates at the rear of the receiver and a large part is telescoped into the bolt carier.
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