Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
BCM
Member Login

Site Notices
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.
View Quote


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
Link Posted: 6/30/2015 7:05:56 PM EDT
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.
Link Posted: 6/30/2015 7:41:26 PM EDT
Discussion ForumsJump to Quoted PostQuote History
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.
View Quote



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
Link Posted: 6/30/2015 7:56:36 PM EDT
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.
Link Posted: 6/30/2015 9:35:37 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Quoted:
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.
View Quote


Not something I am comfortable doing
Link Posted: 6/30/2015 10:52:53 PM EDT
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
View Quote


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.
Link Posted: 7/1/2015 3:16:24 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Quoted:

Yeah well the barrel nut came loose while shooting this gun
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
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?
Link Posted: 7/1/2015 3:28:58 PM EDT
Discussion ForumsJump to Quoted PostQuote History
Quoted:


how did the barrel nut back off?
didn't the holes in it (or splines) for the gas tube prevent it from loosening?
View Quote View All Quotes
View All Quotes
Discussion ForumsJump to Quoted PostQuote History
Quoted:
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
Close Join Our Mail List to Stay Up To Date! Win a FREE ARFCOM Membership!

Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!

You will receive one email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.


By signing up you agree to our User Agreement. *Only subscribers with a registered ARFCOM account are eligible to win.
Top Top