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Posted: 3/7/2006 6:09:08 AM EDT
Does anyone out there make proof fired barrels besides Colt? Bushies are only sample tested by lot. I am really looking for a proofed 16 inch MID LENGTH barrel for my next build.
Link Posted: 3/7/2006 6:27:10 AM EDT
Link Posted: 3/7/2006 7:51:28 AM EDT
[Last Edit: 3/7/2006 7:51:51 AM EDT by Ekie]
BCM and Colt are the only two manufacturers I know of that supply proof tested AR barrels to the US Commercial market. There maybe others I am missing?

The Bushmaster barrel making process is described in great detail in the January 2006 issue,of SAR. No mention of proofing on a lot basis or otherwise.
Link Posted: 3/7/2006 8:13:11 AM EDT
Well, "midlength" rules out Colt, so looks like you'll be getting a BCM barrel. I'm eyeing one of their uppers myself.
Link Posted: 3/7/2006 8:15:15 AM EDT
cmmg does
Link Posted: 3/7/2006 8:20:30 AM EDT

Originally Posted By 223semiauto:
cmmg does



Seen that mentioned before, you have a source for that info?
Link Posted: 3/7/2006 8:39:01 AM EDT
[Last Edit: 3/7/2006 8:39:13 AM EDT by Corporal_Chaos]
I think Denny's "Operator" barrels are proof tested and they are medium weight mid-lengths.
Link Posted: 3/7/2006 8:52:21 AM EDT
Link Posted: 3/7/2006 9:28:36 AM EDT
LMT's are not proof tested?
Link Posted: 3/7/2006 9:34:08 AM EDT

Originally Posted By wile_coyote:
LMT's are not proof tested?



Forgot about them, last I heard the QC manager said no, and Karl said yes.
Link Posted: 3/7/2006 10:16:43 AM EDT

Originally Posted By Ekie:

Originally Posted By 223semiauto:
cmmg does



Seen that mentioned before, you have a source for that info?



Just got an E-mail back from CMMG, the MP on their barrels means Magnetic Particle tested, no proofing.
Link Posted: 3/7/2006 10:21:49 AM EDT

Originally Posted By Ekie:

Originally Posted By wile_coyote:
LMT's are not proof tested?



Forgot about them, last I heard the QC manager said no, and Karl said yes.



Who is this Karl you speak of?
Link Posted: 3/7/2006 10:28:41 AM EDT
Link Posted: 3/7/2006 10:29:02 AM EDT
[Last Edit: 3/7/2006 10:35:44 AM EDT by desertmoon]
DAMN!!! You guys ROCK!!! Thanks to everyone for the info and input. I know it seems a bit "snobby" but I am a true, blue Q.C. freak ( well, to the best of my ability)....a lot of that has to do with what I do for a living ( making airbag systems ) so I am stuck on getting as close to "mil spec" as I can on my builds. I realize that unless we are dealing with true M-16s or Gov't Contract AR-15s that "mil spec" is a relative term. Nonetheless, I am striving, on my builds, to be as close to Colt/G.I. as I can be when certain Colt/G.I. parts aren't readily available...hence the "proof testing" question.

BravoCompany, thank you very much for your detailed reply....I'll be checking out that link!!!!


ETA: Bravo Company, I sure wish YOU GUYS had a CMT contract for C7 uppers....let's just say the "mil spec" ( ) C7 uppers I got from another source were not mil spec by any means. Even the reorder I made was still NOT to MY specs that I requested, though I was told they would be......yes, my build went together well, but that still ticks in the back of my mind....

By looking at your site, it certainly appears you guys actually KNOW what "mil spec" is. Keep up the good work!!!!!
Link Posted: 3/7/2006 10:50:23 AM EDT
[Last Edit: 3/7/2006 11:00:12 AM EDT by Stickman]
Link Posted: 3/7/2006 10:53:15 AM EDT

Originally Posted By Ekie:

Originally Posted By Ekie:

Originally Posted By 223semiauto:
cmmg does



Seen that mentioned before, you have a source for that info?



Just got an E-mail back from CMMG, the MP on their barrels means Magnetic Particle tested, no proofing.



ok well that retarded, the reason you mp is after a proof shot, and then if you do the proof shot and don't mp
Link Posted: 3/7/2006 10:55:04 AM EDT

Originally Posted By comp1911:

Originally Posted By Ekie:

Originally Posted By wile_coyote:
LMT's are not proof tested?



Forgot about them, last I heard the QC manager said no, and Karl said yes.



Who is this Karl you speak of?



That would be Karl Lewis, am pretty sure he owns the place.
Link Posted: 3/7/2006 10:57:40 AM EDT

Originally Posted By Stickman:
img335.imageshack.us/img335/1306/p1212537900stick7yc.jpg




Originally Posted By Stickman:
img404.imageshack.us/img404/8207/p1010056900m9stick7xj.jpg



Commercial MP markings mean Magnetic Particle tested. That is why Bravo marks theirs differently, to clarify theirs are High Pressure tested, hence the HP marking.

USGI barrel markings are a different matter.
Link Posted: 3/7/2006 10:59:58 AM EDT

Originally Posted By MuRDoC:

Originally Posted By Ekie:

Originally Posted By Ekie:

Originally Posted By 223semiauto:
cmmg does



Seen that mentioned before, you have a source for that info?



Just got an E-mail back from CMMG, the MP on their barrels means Magnetic Particle tested, no proofing.



ok well that retarded, the reason you mp is after a proof shot, and then if you do the proof shot and don't mp



Kind of, obviously you do the magnetic particle inspection after proofing. But magnetic particle inspection alone will cull near 100 percent of the bum barrels you are going to find under such processes.
Link Posted: 3/7/2006 11:14:47 AM EDT
Link Posted: 3/7/2006 11:19:00 AM EDT
[Last Edit: 3/7/2006 11:21:50 AM EDT by comp1911]

Originally Posted By Ekie:

Originally Posted By comp1911:

Originally Posted By Ekie:

Originally Posted By wile_coyote:
LMT's are not proof tested?



Forgot about them, last I heard the QC manager said no, and Karl said yes.



Who is this Karl you speak of?



That would be Karl Lewis, am pretty sure he owns the place.



Thanks.

I've purged my collection of LMT and CMMG stuff on the EE anyway. I'm down to one Colt SOCOM and a Denny's Operator. Not to mention the crap I built in my early years, that will get purged on the EE soon as well.

My next rig will come from BCM.


Link Posted: 3/7/2006 12:00:40 PM EDT
I just called LMT and spoke with Ray at (309) 787-7151 and he said that LMT does proof test their barrels. Don't take my word for it call them and see!

Link Posted: 3/7/2006 12:04:57 PM EDT
Thanks 03USMC11,

I thought they did and was going to call later when I got home. You saved me the call.
Link Posted: 3/7/2006 12:12:50 PM EDT
I lost interest in the LMT when I found that they had dowel pins instead of taper pins and no park under the FSB.

Yeah, I'm anal.

Link Posted: 3/7/2006 12:20:04 PM EDT

Originally Posted By comp1911:
I lost interest in the LMT when I found that they had dowel pins instead of taper pins and no park under the FSB.

Yeah, I'm anal.




+1
Link Posted: 3/7/2006 12:34:35 PM EDT
Link Posted: 3/7/2006 12:45:05 PM EDT

Originally Posted By Stickman:
img335.imageshack.us/img335/1306/p1212537900stick7yc.jpg



Stick, does DDI = Daniel Defense? he
Link Posted: 3/7/2006 12:47:57 PM EDT

Originally Posted By BravoCompanyUSA:
Nice Pics !!!

I really wish I could take better pictures.

img.photobucket.com/albums/v445/bravocompanyusa/BrlmarkingM4.jpg




Paul,

I will take some great pics and post them when my matching M4 BCM uppers get here.
Link Posted: 3/7/2006 12:50:47 PM EDT
Link Posted: 3/7/2006 2:58:29 PM EDT
[Last Edit: 3/7/2006 2:59:07 PM EDT by Stickman]
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