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Posted: 6/30/2015 6:32:06 PM EDT
So I partoke in salad days and bought a mossy ar for $500 bucks about a year ago. They dont really list the specs so I emailed Mossberg ressently because I was curious. Here is the responce I got
Thank you for your e-mail. Please see below. The gun is compatible with most “mil-spec” aftermarket components, the Major components are manufactured by Mossberg and or exclusive Mossberg vendors in the USA The receiver (  I think he means bolt) is manufactured from Carpenter 158 steel and is shot peened in a fixture , the bolt and barrel are 100%high pressure tested (HPT) with military M197 or SAMMI equivalent proof ammunition and 100% Magnetic Particle Inspected (MPI), rejection criteria is cracks and inclusions.
The barrel is manufactured from AISI 4140 carbon alloy steel, the barrel is 16-1/4” long and free floated , is chambered for 5.56 NATO and compatible with .223 Rem ammunition , the rifling is button broached wit 6 grooves at a 1:9 RH Twist, the muzzle is threaded with a standard 1/2” x 28” and is fitted with a removeable A2 style muzzle brake not a flash suppressor. Mossberg claims the barrel and bolt are MPI/HPT, yet neither are marked as such. Are all bolts and barrels that go through MPI/HPT marked, is this odd? I also read on another forum Mossbergs response to someones inquiry about the specs and they also claimed it was MPI/HPT |
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Posted: 6/30/2015 7:05:56 PM EDT
[#1]
I lost faith in Mossberg when I ordered a heat shield replacement for my 500, and waited, waited waited.. it's been 4 years now. Still waiting.
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Posted: 6/30/2015 7:41:26 PM EDT
[#2]
Quote HistoryQuoted:
I lost faith in Mossberg when I ordered a heat shield replacement for my 500, and waited, waited waited.. it's been 4 years now. Still waiting. Yeah well the barrel nut came loose while shooting this gun I just replased the free float tube it came with to a UTG SS |
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Posted: 6/30/2015 7:56:36 PM EDT
[#3]
Who cares?
Seriously. Go to your press and load up a hot ass round. Shoot it. Go to a local NDE/inspection company and let some flunky spray some shit on the bolt and shine a black light on it. You can even get a paper that says 'No defects witnessed at time of inspection.' That's all there is to it. |
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Posted: 6/30/2015 9:35:37 PM EDT
[#4]
Quote HistoryQuoted:
Who cares? Seriously. Go to your press and load up a hot ass round. Shoot it. Go to a local NDE/inspection company and let some flunky spray some shit on the bolt and shine a black light on it. You can even get a paper that says 'No defects witnessed at time of inspection.' That's all there is to it. Not something I am comfortable doing |
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Posted: 6/30/2015 10:52:53 PM EDT
[#5]
Quoted:
Are all bolts and barrels that go through MPI/HPT marked, is this odd? I also read on another forum Mossbergs response to someones inquiry about the specs and they also claimed it was MPI/HPT I've bought lots of bolts over the years that were claimed HP/MPI...some are marked and some are not. No rhyme or reason that I can tell. I think it comes down to whether or not you trust the company you bought it from. |
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Posted: 7/1/2015 3:16:24 PM EDT
[#6]
Quote HistoryQuoted:
Yeah well the barrel nut came loose while shooting this gun Quote HistoryQuoted:
Quoted:
I lost faith in Mossberg when I ordered a heat shield replacement for my 500, and waited, waited waited.. it's been 4 years now. Still waiting. Yeah well the barrel nut came loose while shooting this gun how did the barrel nut back off? didn't the holes in it (or splines) for the gas tube prevent it from loosening? |
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Posted: 7/1/2015 3:28:58 PM EDT
[#7]
Quote HistoryQuoted:
how did the barrel nut back off? didn't the holes in it (or splines) for the gas tube prevent it from loosening? Quote HistoryQuoted:
Quoted:
Quoted:
I lost faith in Mossberg when I ordered a heat shield replacement for my 500, and waited, waited waited.. it's been 4 years now. Still waiting. Yeah well the barrel nut came loose while shooting this gun how did the barrel nut back off? didn't the holes in it (or splines) for the gas tube prevent it from loosening? Yup, that's the only reason it did not come off completely |
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