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what are the bennifit from ar-15 bolt carriers to thye m 16 type other than the weight.

this is used in a M4 style ? which would be best ?
 
Some people use M16 carriers in the short barreled rifles, as they are a little heavier, and they can make the rifle cycle more reliably. YMMV :D
 
My 11.5" ran with a -15 carrier and never had a problem. Perhaps the extra mass would only be a benefit if you went smaller than 11.5", like a super short 7.5" upper where the gas port is closer to the reciever.
 
My new 7.5" Bushmaster has an AR15 carrier. No problems of any kind. Several hundred rounds now; no failures to feed, fire or eject. This little gun rocks! :mrgreen:

HPIM0523.jpg


Regards,
 
Extra mass tames the cyclic rate in full auto fire (M-16) and increased cycling reliability in both the M-16 & AR15 - regardless of peoples claims it can't hurt to use one in an AR15. Something like the magpul anti-tilt followers... better but not going to be real noticeable in good mil spec mags. But better can never be a bad thing if you can afford it.

Read this article and you decide:

RELATED ARTICLE: Weight gain isn't always bad.

Two too easy ways to soften action cycling are bolt carrier weight and buffer spring "power." David Tubb developed a carrier weight system called "CWS." It's a hollow metal cone with a flange on one end. This installs into the back of a bolt carrier. The hollow center of the CWS can accept different weight inserts. The reason it works is plain old physics. Anyone who has pushed anything knows that the heavier it is the harder it is to move. The heavier a bolt carrier the harder it is to move, and the effect is that it accelerates slower. The slower it starts back the longer time there is for gas pressure to subside and dissipate. That's great. The extra carrier weight would then seem to be a bad deal when it all comes back home to chamber the next round since extra weight is harder to stop, but since the carrier doesn't have a chance to accelerate to the same speed a standard carrier does, it's actually softer in operation. Win. win.

Heavier weight carriers do the same thing, and I still put CWS in the heaviest carriers I can find. All my AR-15s are built with as much carrier mass as the law allows. Actually, technically, we're not supposed to use any M16 parts in a semiauto, but JP and Les Baer both make carriers with the extra weight at the rear end that's the hallmark of the M16 unit. An M16 carrier weighs about one ounce more than an AR-15 carrier.

Stronger buffer springs have the same effect: increased load against the carrier when the bolt is in battery means it has a greater force to overcome prior to movement

http://www.findarticles.com/p/articles/mi_m0BQY/is_11_51/ai_n15402262#continue
 
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