NFA newbie- dedicated suppressed 11.5" build questions

[markm]

My brass always tends to land at my 4:00 in a neat little pile, its extremely smooth and gas face is almost non existent.

The downside, of course, is that the rifle turns into a single shot if you remove the suppressor. No free lunch.

That's exactly how my 11.5 with a .060 is running. I'm excited to get it back out this weekend and test it some more.

[Clint]

That's exactly how my 11.5 with a .060 is running. I'm excited to get it back out this weekend and test it some more.

Does it cycle reliably, but just not lock back using 5.56 unsuppressed?

[markm]

Does it cycle reliably, but just not lock back using 5.56 unsuppressed?

It'll run a little bit and then short stroke even with 5.56. .223 won't even pick up the next round in the mag.

[Eurodriver]

It'll run a little bit and then short stroke even with 5.56. .223 won't even pick up the next round in the mag.

Sure is smooth though isn't it?

BANG!

...click.

[markm]

Sure is smooth though isn't it?

BANG!

...click.

That's a little too smooth... I'm not a smoothness obsessor. And the 11.5 is not THAT smooth with the can on... but it cycles consistently and postively while piling up brass in a nice pile.

[LovelandSBR]

I ended up getting a FatBoy gas tube for mine. Used a BCM barrel and it was way over gassed. My magazine couldn't keep up with the bolt speed. The FatBoy helped enough to make the issue rare.

[Clint]

I ended up getting a FatBoy gas tube for mine. Used a BCM barrel and it was way over gassed. My magazine couldn't keep up with the bolt speed. The FatBoy helped enough to make the issue rare.

This thread may interest you.

http://m4carbine.net/showthread.php?t=118010

[eodinert]

I got one of those goofy W.A.R. upper receivers with the lever on the side, and it works as advertised... The selector never gets too hot to touch, either. My gas port was adjusted for the 11.5 inch length I had Adco cut the barrel to, so it's not a direct comparison, I guess, but the lever really mellows it out suppressed.

The idea of a goofy upper with a lever on it sounds less shitty than the idea of a rifle that won't run without a can.

[RyanB]

I ordered an A5H4 (6.8 oz) buffer tonight for my suppressed gun. I'm pretty sure the 1.5 ounces over what I have now is too much but the next step up (6.03 oz) was out of stock everywhere.

Will report back when I can. In any case with M193 I still have way more gas than I need.

[Iraqgunz]

Somehow I doubt that. I run several BCM barrels and have seen a few hundred give or take and they aren't overgassed.

What buffer are you running? What barrel length do you have?

I ended up getting a FatBoy gas tube for mine. Used a BCM barrel and it was way over gassed. My magazine couldn't keep up with the bolt speed. The FatBoy helped enough to make the issue rare.