The post whore thread.

[GilpinGuy]

Want to see a different kind of movie. Check out A Boy and His Dog.

Not my mind of kink but I'll check it out.

[TheBelly]

Been at work for 1 hour and 6 minutes.

Already one scheduling screw up. Thankfully, this is not my fault.

[TheBelly]

Turns out, the PredatAR is a little overgassed.

If I want that thing to run suppressed, I'll need to change the gas block to an adjustable.

[waxthis]

[HoneyBadger]

So then, Wax, you must be one of those freedom-loving terrorists or something, right?

[HoneyBadger]

Turns out, the PredatAR is a little overgassed.

If I want that thing to run suppressed, I'll need to change the gas block to an adjustable.

How does suppression affect gassing for DI guns like ARs and what can you do about it beside an adjustable gas block? I'm assuming that a can raises the gas pressure? Would changing your buffer weight have any useful affect? Is that more of a bandaid than a solution?

[TheBelly]

How does suppression affect gassing for DI guns like ARs and what can you do about it beside an adjustable gas block? I'm assuming that a can raises the gas pressure? Would changing your buffer weight have any useful affect? Is that more of a bandaid than a solution?

The increased back pressure (caused by a can) increased bolt speed. The bolt moveg so fast that the rest of the system can't keep up. Several things indicate excessive bolt speed. In mine, the indicator was that the follow on round was double-feeding, but not in the normal sense as it wasn't caused by a magazine failure. The (just fired) brass hadn't cleared the chamber by the time the bolt slammed home with a new round.

Brass not clearing the chamber is excessive bolt speed and the bolt needs to be slowed down. I put in a heavier spring and used a carrier weight to try and slow it down. No dice.....and I put a HEAVY system in that gun. There's just too much gas going back.

The only other thing is too much gas and an adjustable gas block is the way for that.

[Ridge]

Today's a great day to not have to leave the house.

[brutal]

Turns out, the PredatAR is a little overgassed.

If I want that thing to run suppressed, I'll need to change the gas block to an adjustable.

I can't get my Sig716P to cycle suppressed on any setting with the PCI group buy .308 ammo. Runs fine with good ol PPU and my own dang low power M80 loads. I guess maybe they're just too hot. I have not put a chrono to them.

Anyone need a good deal on some nice M80 ball steel?

[brutal]

How does suppression affect gassing for DI guns like ARs and what can you do about it beside an adjustable gas block? I'm assuming that a can raises the gas pressure? Would changing your buffer weight have any useful affect? Is that more of a bandaid than a solution?

Depends on the can too.

My .30 cal can runs fine on the DI 5.56. Just a little less sound suppression, but less gas to blowback in your face or cause cycling issues. AAC claims they designed the can to create less back pressure.

Except for my Sig 716P not cycling the PCI M80 loads when suppressed, I've had zero issues cycling anything else with that AAC can. We'll see when I build a 10.5 upper how that plays out. I'm thinking I'll have to work on an adjustable system and am considering just going to an AA piston setup.