
Originally Posted by
BWT
The philosophy I subscribe to is run the longest gas system you can in DI.
If that's Midlength because you have a 14.5''+ barrel, if that's a Rifle Length at 18''+, Carbine length at 14.5''or less. (And honestly, alot of people are having great results with running Mid-Length gas systems on 14.5'' so I might just run a carbine length on barrel lengths shorter than 14.5'')
I mean, faster gas port erosion, faster parts wear at higher pressures and more are the concerns.
But again, I haven't seen those documented. They would seem to be true, but I haven't seen it tested either.
What you do know is that it gives more dwell time and less recoil for 2'' of gas tube, a longer handguard, (which IMHO is better for handling the weapon, and even if you don't handle way out there, it's nice to have options, you can attach a bipod, etc.), and usually has a lot less extractor issues as it isn't as "violent" extraction.
Use what you want, but I don't see a downside with going with the longest gas system available as a general rule of thumb.
great post.
i went this route with my 16'' carbean/bushy.
cutt the barrel back to 13.5 added a levang comp.
m16 carrier and H2 buffer.
works great.
no issues at all, softer shooting.
peabody
i started this life with nothing.....kept most of it.
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