Mid-Length vs. Rifle Length gas system questions.
Posted 03 November 2009 - 12:18 AM
Posted 03 November 2009 - 12:59 AM
Pigtails don't make carbine gas systems much softer at all. Rifle length gas systems are the way to go if you want a soft shooting rifle.
CTR stocks grace most of my rifles now, even my 20" ers.
For the ultimate shooting match rifle you want it matched with your buffer. I prefer the lightweight JP stainless carrier and a standard carbine buffer, with the gas turned down to function with Wolf ammo which gives me just the right gas cushion with my reloads.
Check the latest issue of front sight for a good article on comps.
Posted 03 November 2009 - 01:14 AM
So nature of problem is the M4 has a pretty violent extraction which migated by the rubber donut on the extractor. Plus a big problem with M4 is burning mag after mag in full auto gets it too hot especially the end of that gas tube. The more rounds you shoot the more gas port erodes and more gas, pressure goes up and so does the auto cyclical rate. Then more failures.
So for 18" barrel you can argue mid or rifle length, but skip the M4 length. I've built two 18"s' with mid-length and I'm using Douglas SS Blanks done by Compass Lake. One is a Stag based Lefty. Both work fine.
Posted 03 November 2009 - 07:33 AM
and for comps....I choose the SJC Titan. And as for Enidines.....run one if you like but the fellow above hit the nail pretty squarely on the head.
Speed is Fine,Accuracy is final....but accurate hits at extremely high speed is final much faster.
Amateurs do it til they get it right. Professionals do it til they can't get it wrong.
Posted 03 November 2009 - 07:45 AM
There is a lot of good information on this subject in recent posts.
Read them carefully. As usual, some is B.S. and some is very good.
Trust me, 18 inch, rifle gas=a nice system!
Posted 03 November 2009 - 08:41 AM
Posted 04 November 2009 - 08:12 AM
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Posted 18 November 2009 - 11:25 PM
Posted 19 November 2009 - 06:33 AM
Posted 19 November 2009 - 08:22 AM
Posted 19 November 2009 - 07:25 PM
Posted 20 November 2009 - 08:15 AM
Posted 21 November 2009 - 12:10 PM
Posted 13 August 2010 - 12:43 PM
its a mid-contour barrel [too heavy] , so steve trimmed her down, and moved gas port to a middy.
having said that... i want a DPMS 16'' with rifle gas so bad , i can taste it.
already have a 20'' service rifle, its the cats meow, for accuracy and soft shooting.
Posted 08 February 2012 - 05:38 PM
Wanting to cut the barrel down to 18" if possible (20 if its not a smart idea) and have been seeking out info on whether this will mess up the cycling since it has the rifle gas system on it and 18 would bring it down to just past the has block. I do plan to put a brake on it but want it to work without one for a while first. Can I just do a cut and crown on it or are the ports going to need to be resized for it to work properly? It currently has the A2 stock and buffer that came with it and i'd like to put the PRS on it eventually but cant think of any other mods i have in mind that would affect cycling.
Thanks in advance for any answers as I try to sort this out before getting the barrel hacked!
Posted 08 February 2012 - 05:59 PM
If you think you can come out here and do it....Good luck to ya.
-Willie Edwards, Swamp People.
Posted 09 February 2012 - 07:21 AM
Posted 09 February 2012 - 08:40 AM
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