User Panel
User Panel
User Panel
|
Posted: 2/6/2016 10:59:43 PM EDT
[#1]
Most likely a gas issue, you probably need to enlarge the gas port. For a potential temporary fix try running it with a suppressor to see if the extra back pressure from the can resolves the issue.
|
|
|
|
Posted: 2/6/2016 10:59:46 PM EDT
[#2]
Did you change out the gas screw?
|
|
|
|
Posted: 2/6/2016 11:35:54 PM EDT
[#3]
Yes the gas screw was changed when it was cut. I had everything done by PMM
|
|
|
|
Posted: 2/6/2016 11:50:35 PM EDT
[#4]
1. Call who did your barrel cut
In the meantime 1. Are you using non modified pmags? 2. Make sure gas selector is in non suppressed setting? 3. Double check that the gas screw is the correct size? |
|
|
|
Posted: 2/7/2016 12:38:50 AM EDT
[#5]
get one of the 1.70 gas control jet screws from handl. my 10.5 inch barrel 16 will run 5.56 suppressed and unsuppressed. it will run .223 suppressed and unsuppressed. with tula, it won't lock back on the last round unsuppressed but it loads and fires fine. I have had no issues with gas-to-the-face with 5.56 or .223 suppressed. if you want to fine tune yours, the FN gas screws are about $5 each at Midwest gun works. the stainless steel ones from handl run about $7 each. eta: handl recommends the 2.25 jet for the 16 but you will be over-gassed. most will find the 1.70-1.85 range works best. changing them out is very simple. you can find directions on the handl website.  |
|
|
|
Posted: 2/7/2016 1:43:35 AM EDT
[#6]
Quote HistoryQuoted:
get one of the 2.25 gas control jet screws from handl. my 10 inch barrel 16 will run 5.56 100% unsuppressed and it will run some .223 unsuppressed. tula seems to be the weakest. mine will fire about 3-5 rounds and then fail to feed the tula rounds unsuppressed. it will run both 5.56 and .223 with a suppressor. if you want to fine tune yours, the FN gas screws are about $5 each at Midwest gun works. eta: I just use the 2.25 screw in mine. changing them out is very simple. you can find directions on the handl website. Thank you I will try that k think it could be the mags but I'll probably pick up an extra gas screw. |
|
|
|
Posted: 3/1/2016 1:54:02 AM EDT
[#7]
Wish I'd never seen this post! Guess where my barrel assembly just arrived today to be chopped :)
If you wouldn't mind updating your progress OP, I'd really appreciate it! PMM supposedly supplies two jets (one installed) when he returns them to the customer: "Appropriate size Gas jet is installed in barrel by PMM at the time of service this will vary in size depending upon the length of barrel you choose. Additionally I provide one back up Gas jet the next size larger and your factory gas jet". Also, what is the approximate "true" turn-around time? |
|
|
|
Posted: 3/2/2016 1:26:38 AM EDT
[#8]
FWIW, PMM cut my SCAR 16 barrel down to 14" and pinned/welded a Surefire brake, Works perfect and I couldn't be happier. Turnaround was fast too. Sorry for your problems. I am certain that they will get you squared away.
|
|
|
|
Posted: 3/6/2016 11:10:12 AM EDT
[#9]
Quote HistoryQuoted:
Wish I'd never seen this post! Guess where my barrel assembly just arrived today to be chopped :) If you wouldn't mind updating your progress OP, I'd really appreciate it! PMM supposedly supplies two jets (one installed) when he returns them to the customer: "Appropriate size Gas jet is installed in barrel by PMM at the time of service this will vary in size depending upon the length of barrel you choose. Additionally I provide one back up Gas jet the next size larger and your factory gas jet". Also, what is the approximate "true" turn-around time? My barrel is also there being cut. I wouldn't sweat it, they do good work. As far as the gas issue, it's an easy fix, just get some extra jets and replace if you have any issues. There are many PMM cut barrels out there running fine, I'm guessing it's more of a ammo related issue. |
|
|
|
Posted: 3/6/2016 3:58:10 PM EDT
[#10]
Interested to hear what's up with the OP's situation. I'm sure everything will be fine on the barrels, and fell like I'd done a fair amount of research before sending it to PMM. Couldn't find anyone posting serious issues. Also had a good feeling about things after speaking to Jarod on the phone when we talked about the work pre-sending it.
This has been a long project for me and I honestly just wish I'd ponied up and bought a 10" FN OEM assembly and drove on. Could have sold my 16" barrel since its never, ever going back on the gun either way. Once I have the chopped assembly in hand that opinion hopefully will change! |
|
|
|
Posted: 3/6/2016 4:24:57 PM EDT
[#11]
Quote HistoryQuoted:
Interested to hear what's up with the OP's situation. I'm sure everything will be fine on the barrels, and fell like I'd done a fair amount of research before sending it to PMM. Couldn't find anyone posting serious issues. Also had a good feeling about things after speaking to Jarod on the phone when we talked about the work pre-sending it. This has been a long project for me and I honestly just wish I'd ponied up and bought a 10" FN OEM assembly and drove on. Could have sold my 16" barrel since its never, ever going back on the gun either way. Once I have the chopped assembly in hand that opinion hopefully will change! I was going to go OEM but 1k vs 165.00 made it a easy decision. I can always buy a factory barrel down the road if I find one at a good price. |
|
|
|
Posted: 3/10/2016 12:32:40 AM EDT
[#12]
Guys just because one person is having problems doesn't mean PMM does bad work. There are a lot of variables here, mainly ammunition and the gas screw. Jarod cut my barrel down a few months back and I am currently running it in a rifle course. So far around 400 rounds down range with only two type 1 malfunctions. At first I thought WTF happened!? How could I go the first 200+ rounds flawless and then have the two malfunctions back to back. Well unbeknownst to me the instructor saw exactly what happened. Somehow my sling got wrapped up with the charging handle causing it to short stroke. Bottom line Jarod is a standup guy and if he has your barrel his work is as good as Adco or Marvin Pitts over at Nefarious.
|
|
|
|
Posted: 3/10/2016 5:52:22 PM EDT
[#13]
Another PMM success story here, too.
You can replace the gas screws, it's not PMM's fault. |
|
|
|
Posted: 3/10/2016 11:39:36 PM EDT
[#14]
Not doubting the quality of his work, or saying he's anything but a stand up guy. This topic just happened at the exact moment my barrel assembly arrived there to get chopped! Have PMM QD attachments for the SCAR, UMP and my CZ Scorpion and all of those items are very well constructed and quality parts.
My barrel is on the way back, supposedly arriving tomorrow (usps is less that accurate on tracking) and I'll test it immediately/post results. |
|
|
|
Posted: 3/11/2016 11:22:16 PM EDT
[#15]
Barrel assembly arrived today from PMM with their 1.9mm gas screw. Very briefly, tested with XM193 (was getting dark). Loaded two magazines with one round each to check lock-back on empty - both passed. Fired five rounds slow, dumped the remainder as fast as I could pull the trigger - zero issues. Obviously, very preliminary results but I feel much better now
|
|
|
|
Posted: 3/20/2016 7:01:40 AM EDT
[#16]
Where/who is PMM and what is the price for a cut and pin?
V OUT |
|
|
|
Posted: 3/20/2016 9:55:24 AM EDT
[#17]
Quote HistoryQuoted:
Where/who is PMM and what is the price for a cut and pin? V OUT PMM is Parker Mountain Machine. Just GoogleFu that and a menu of gunsmithing services comes right up. |
|
|
|
Posted: 3/21/2016 11:06:26 AM EDT
[#18]
Quote HistoryQuoted:
Barrel assembly arrived today from PMM with their 1.9mm gas screw. Very briefly, tested with XM193 (was getting dark). Loaded two magazines with one round each to check lock-back on empty - both passed. Fired five rounds slow, dumped the remainder as fast as I could pull the trigger - zero issues. Obviously, very preliminary results but I feel much better now Did Jared send you 2 extra gas screws, too? He did on my chop. 1 larger and 1 smaller. It works fine with the installed ones on my xm193 clone reloads, though. |
|
|
|
Posted: 3/30/2016 5:52:39 PM EDT
[#19]
Quote HistoryQuoted:
Did Jared send you 2 extra gas screws, too? He did on my chop. 1 larger and 1 smaller. It works fine with the installed ones on my xm193 clone reloads, though. Quote HistoryQuoted:
Quoted:
Barrel assembly arrived today from PMM with their 1.9mm gas screw. Very briefly, tested with XM193 (was getting dark). Loaded two magazines with one round each to check lock-back on empty - both passed. Fired five rounds slow, dumped the remainder as fast as I could pull the trigger - zero issues. Obviously, very preliminary results but I feel much better now Did Jared send you 2 extra gas screws, too? He did on my chop. 1 larger and 1 smaller. It works fine with the installed ones on my xm193 clone reloads, though. He sent it with one installed (1.9mm) and the next size up (2mm) in a bag stapled to my receipt along with the original gas jet screw that was installed pre-chop. |
|
|
|
Posted: 4/19/2016 11:59:47 AM EDT
[#20]
glad to hear that the guns are working great. I have a 16/17 that I am contemplating sending off, just have not had the balls to do it yet I guess.
All of these success stories and no pics guys?????? |
|
|
|
Posted: 4/28/2016 5:10:08 PM EDT
[#22]
Nothing but good things to say about my PMM chop. Good crown, no flaking, concentric threads, good customer service.
My 17 had 2 FTE with the gas screw yah the sent it back with. Changed out at the range and runs like a top. Highly recommend his services! |
|
|
|
Posted: 5/22/2016 11:02:46 PM EDT
[#23]
Sending my 16s barrel off to him this week to be cut down to 10". I don't know why anyone would spend $1K on a factory barrel assembly when you can pay $165 to have it done by PMM.
|
|
|
|
Posted: 6/2/2016 2:04:55 AM EDT
[#24]
Quote HistoryQuoted:
Wish I'd never seen this post! Guess where my barrel assembly just arrived today to be chopped :) If you wouldn't mind updating your progress OP, I'd really appreciate it! PMM supposedly supplies two jets (one installed) when he returns them to the customer: "Appropriate size Gas jet is installed in barrel by PMM at the time of service this will vary in size depending upon the length of barrel you choose. Additionally I provide one back up Gas jet the next size larger and your factory gas jet". Also, what is the approximate "true" turn-around time? Changed out the jet that it came with for the other one supplied, works like a charm now! |
|
|
|
Posted: 6/16/2016 2:22:41 AM EDT
[#25]
Quote HistoryQuoted:
Changed out the jet that it came with for the other one supplied, works like a charm now! Quote HistoryQuoted:
Quoted:
Wish I'd never seen this post! Guess where my barrel assembly just arrived today to be chopped :) If you wouldn't mind updating your progress OP, I'd really appreciate it! PMM supposedly supplies two jets (one installed) when he returns them to the customer: "Appropriate size Gas jet is installed in barrel by PMM at the time of service this will vary in size depending upon the length of barrel you choose. Additionally I provide one back up Gas jet the next size larger and your factory gas jet". Also, what is the approximate "true" turn-around time? Changed out the jet that it came with for the other one supplied, works like a charm now! Great to hear that you got it running! Mine has been problem free. Different optic on it now (returned all five of my EOTech's for refund)...  " />
|
|
|
|
Posted: 6/17/2016 7:37:18 PM EDT
[#26]
Quote HistoryQuoted:
Great to hear that you got it running! Mine has been problem free. Different optic on it now (returned all five of my EOTech's for refund)... http://<a href=http://i760.photobucket.com/albums/xx244/officer960/IMG_0671_zps1s6xn4qc.jpg</a>" /> Quote HistoryQuoted:
Quoted:
Quoted:
Wish I'd never seen this post! Guess where my barrel assembly just arrived today to be chopped :) If you wouldn't mind updating your progress OP, I'd really appreciate it! PMM supposedly supplies two jets (one installed) when he returns them to the customer: "Appropriate size Gas jet is installed in barrel by PMM at the time of service this will vary in size depending upon the length of barrel you choose. Additionally I provide one back up Gas jet the next size larger and your factory gas jet". Also, what is the approximate "true" turn-around time? Changed out the jet that it came with for the other one supplied, works like a charm now! Great to hear that you got it running! Mine has been problem free. Different optic on it now (returned all five of my EOTech's for refund)... http://<a href=http://i760.photobucket.com/albums/xx244/officer960/IMG_0671_zps1s6xn4qc.jpg</a>" /> How do you like the Beretta? Compared to the SCAR? One of my sons is a lefty and I was considering buying him one of the two. |
|
|
Win a FREE 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 an 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.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
