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Posted: 12/15/2001 7:09:35 PM EDT
I bought a Bushmaster m4gery upper and need bolt and assembly. I saw a FN ($119), is it OK or should I look for Colt/Bushy. Probably a stupid question, but that's how you avoid stupid mistakes.

Thanks in advance
Link Posted: 12/15/2001 11:03:10 PM EDT
I buy MilSpec M16 Carriers and then use a plasma cutter to make them USDA legal.Others use a milling machine or Dremel.
Link Posted: 12/16/2001 12:02:13 AM EDT
You can buy a brand new milspec Bushmaster bolt/carrier for $89 from Keissler's(sp?) who advertise in Shotgun News. Why bother with anything else?
Link Posted: 12/16/2001 4:12:56 AM EDT
keislers was out when I ordered the m4 upper friday. Thanks, I read that FN was a USGI supplier. I need to verify that the bolt is ar15 not m16 as I don't care to bother with modifications. Would there be a ar15 "mil issue" bolt or just "mil spec"
Link Posted: 12/17/2001 11:05:37 AM EDT
Try Shurluk Marketing. They always have a supply of AR15 or M16 carriers and bolts. $115 complete. High quality magna-fluxed.
Link Posted: 12/17/2001 11:27:09 AM EDT
Have you tried ordering one direct from Bushmaster? Their price is around $120. That is for an AR15 config, no mods needed.
Link Posted: 12/17/2001 5:13:31 PM EDT
i have two bushmaster dissipators i ordered from the factory over two years ago. they are flawless rifles. bushmaster is a defense contractor and since you have a bushmaster upper anyways, go with bushmasteer
Link Posted: 12/17/2001 5:35:10 PM EDT
I'd go with DPMS for the bolt. For all the claims about all of Bushmaster's parts being mil-spec, I've seen more problems with Bushmaster bolts than any other. Not the carriers, just the bolts themselves. You can get a DPMS bolt/carrier complete for just over a hundred bucks from Brownells, if I remember correctly.
Link Posted: 12/17/2001 5:41:01 PM EDT
Hey, Sparky (always wanted to say that! and have it actually be real...)

What kind of problems have you seen with Bushy bolts?? I've been shooting these things for a lot of years now, and the only serious problems I've heard of were in full auto guns with tens of thousands of rounds through them.

Just curious.... would like to know what to watch out for.
Link Posted: 12/17/2001 5:49:01 PM EDT

Originally Posted By gus:
You can buy a brand new milspec Bushmaster bolt/carrier for $89 from Keissler's(sp?) who advertise in Shotgun News. Why bother with anything else?

Uh, because they are out, and have been out for some time.
Link Posted: 12/17/2001 8:38:45 PM EDT

The problems I've seen have been bolts that are out of spec, usually in that the face of the bolt is too far back from the forward edge of the locking lugs. I've also seen firing pin holes that were too large combined with a tail on the bolt that was too short, and the pin would protrude too far and get stuck when the hammer fell, locking up the gun. Luckily we found that problem while dry-firing a new gun, as it could easily have led to a pierced primer.

My experience with my own Bushmaster products has been outstanding, but I've seen a lot of rifles have out-of-spec bolt problems. I've seen more of this on the LEO carbines than anything else.
Link Posted: 12/18/2001 2:20:40 AM EDT
Sparky315 -

Thanks. More stuff to keep an eye out for.


You're late - read the post following the one you quoted.
Link Posted: 12/18/2001 6:35:54 AM EDT
A friend ordered one of the DPMS carrier and bolt from Brownells, and it checked out with excessive headspace in ALL barrels tried. It also looked like it was made with files in Afghanistan. The price was good but it was a piece of crap. The DPMS lower parts kit from Brownells was missing a bunch of pins, and the LAR upper receiver was out of spec also (short). I would personally avoid DPMS, or DPMS from Brownells, and LAR (whoever they are).
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