If you need an AR to function with that wide a range of ammunition and temperature but are unwilling to run it overgassed, you need an adjustable gas block.
Andy
If you need an AR to function with that wide a range of ammunition and temperature but are unwilling to run it overgassed, you need an adjustable gas block.
Andy
iF iT wOn'T rUn sTeEl iT dOn'T dEsErvE bRaSs
I don't get why dudes think this is important. Stock up on quality 5.56 and shoot a properly gassed rifle.
bUt wHaT iF aMmO bEcOmEs sCaRcE
Yeah, like brass ammo is gonna dry up but you'll be tripping over boxes of Tula everywhere you look. Here's a hint, when ammo gets scarce, it all gets scarce. Stock up on the good stuff and live your life.
I installed a BRT EZ-tune gas tube on a badly over-gassed larue 16" mid-length barrel. It worked as advertised and I had zero failures to lock-back with a variety of quality brass-cased ammunition. I haven't done any statistically significant testing to determine if the EZ-tune gas tubes have any effect on accuracy/precision.
The larue barrel has a gas port diameter of 0.082". The BRT EZ-tune gas tube that I used is supposed to create the equivalent gas-drive of a 0.073" gas port.
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Last edited by Molon; 09-19-22 at 17:48.
All that is necessary for trolls to flourish, is for good men to do nothing.
I've had great luck with BRT EZ-Tune gas tubes, and before that, gas port inserts. I wish I had an ample supply on hand for conducting experiments.
Completely disagree. And, contrary to your point, I ordered tubes that are supposed to allow you to use steel.
Maybe you're not a poor. I'm on a State income, and you, and others with similar opinion, know what that market price is for quality 5.56.
I accepted and opined to BRT that a properly gassed rifle for my requirements in the environment I live may have been asking too much.
Really it's not even a 'may' at this point, it is.
If I want to train year round, I have no choice but to run steel. It's not just Tula, any steel. Training trumps a properly gassed carbine and I'd take the Armalite over many others given it's performance.
Another avenue, would be a piston AR, rather than a properly gassed DI that cannot meet the requirements. That said, the BCM is getting moved on in favor of the 816 I've acquired (review to follow). So far, so good. We'll see what winter holds.
*BRT is sending adjusted tubes for me to try and reflects well on them.
The Faxon mid gas barrel I had with a 0.081" gas port locked back with an A5H4 buffer.
Got a BRT tube sized for an A5H2 and calmed it right down.
Sold that off to a buddy and told him to run full power ammo with it.
Of course the first ammo he gets is Tula and it's just a single shot.
Gave him a carbine spring and buffer with a spacer to try out with the steel cased ammo, should work now.
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