I couldn’t find anything via the search feature, so here goes:
Anyone used one of the PRI “Fat Boy” carbine gas tubes as a fix for an over-gassed carbine? If so, did it help enough to warrant the $49 price?
http://www.precisionreflex.com/Detail.aspx?PROD=186699&TERM=gas tube
Strikes me as less optimal to actual gas restriction. I’ve spent a lot of time and effort on gas flow the last 2-3 months. It’s fun and exhausting.
I’d try one if given the chance, but I wouldn’t pay for it on a gamble.
Yeah, I’m not sure enough about it to drop nearly $50 for it, but I’m putting together a 10.5" SBR, and so I was thinking maybe instead of the band-aids on the back-side of the weapon, maybe this gas tube might help. Hopefully someone has tried it out and can give a short review…
They don’t work. Why not use a proper barrel rather than a band-aid. Since you say you are “building” what barrel are you using?
I guess I’d ask… how do you know it’s overgassed if it’s not built yet?
Good point! I don’t. This is just a pre-emptive question, plus I have been curious about it since the SHOT Show.
A 11.5" DPMS (CL’d 1/9") being cut down to 10.5" by ADCO as we “speak”. Unfortunately, it was all I could find in my price-range due to the current state of AR parts…
Why would anyone want their rifle to run at 700RPM? The RPM on the M4 is what it is for a reason.
I wouldn’t do it but since you acted before asking not much can be done. I would contact ADCO and ask then to measure that gas port.
Does it have/will it have a fixed FSB?
I must have not been very clear in my above posts. I’m not asking for anyone to troubleshoot the thing, because it’s not even assembled. I spent most of my career as a small arms repairman, so if I do have any issues I’ll run them down. I was just wondering if anyone had used the PRI tube, and if so, what their experience with it was. I just figured a reduction in gas pressure may have some merits, especially once I put a suppressor on it.
It has a standard FSB.
It’s not going to help you. You have a barrel that is almost certainly overgassed. Then you are going to add a suppressor which is going to add even more back pressure.
Your best option is to sell that DPMS barrel and get a quality one. In addition you may even have some issues with the chamber as they are known to be tight. All the DPMS carbines and SBR’s I have seen did not run well at all.
Yeah, I’m no DPMS fan. Their stuff is typically mediocre, at best. But, the places I usually get components (BCM, Spikes, PSA) were all sold out and I didn’t want to pay the ridiculous prices for a good barrel that was in private hands over on Gunbroker. So, I’ll run this one and see how it goes. Hopefully once the buying madness subsides I can get the 10.5" PSA 1/7" CHF barrel that I wanted for this project all along. In the interim, I’ll have my upper complete for when my stamp arrives.
And the knowledge from the R&D. Have fun, report back.
Thanks Pat. Yeah, if it turns out a disaster, I’ll let ya’ll know!
Are you aware that BCM has 11.5" in stock?
I think Murphy’s law covers that. As soon as you’re far enough along in a project that you can’t back out, the correct parts shows up.
Unfortunately, they didn’t when I ordered this one. If I could afford to buy it now, I would.
I bought one several years ago and used it on a 14.5" gun. When using hotter milspec ammunition it ran fine. In fact it felt softer to me under recoil than previously.
As soon as I ran of out that ammo during that time frame and picked up some generic stuff from wal mart the gun immediately turned into a single shot rifle.
So, at least if you’re not running hotter ammunition, I’d say it’s a don’t purchase item to anyone considering one.