Suppressors Do suppressors make the gun run dirty?

Jig Stick

Gunny Sergeant
Full Member
Minuteman
Aug 27, 2010
1,438
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Pittsburgh PA
Recently started shooting suppressed. I have noticed that my actions are much dirtier afterwards. Is this normal? My lugs where dirty as hell, and bolt went from silky smooth to crushed glass.
 
That sucks. My BAT actions didn't care for it too much, but I was also running it without any grease on the lugs. So I think that was a big issue too. Ive got my BATs plenty dirty before, but this was off the charts dirty
 
You should try it with a short barrel AR-15. Man, 50 rounds is like 500!

But, like the others are saying, it creates a lot of blowback, which is the nature of the suppressor. It reduces muzzle blast, muzzle flash, recoil, and sound. That gas has got to go somewhere.
 
That sucks. My BAT actions didn't care for it too much, but I was also running it without any grease on the lugs. So I think that was a big issue too. Ive got my BATs plenty dirty before, but this was off the charts dirty

While it will do it to a certain extent on a bolt gun, it should be very minimal if you've got the right powder combo and the cases are sealing up nice and tight. A semi-auto really gets nasty though.
 
While it will do it to a certain extent on a bolt gun, it should be very minimal if you've got the right powder combo and the cases are sealing up nice and tight. A semi-auto really gets nasty though.

That been my experience as well. Bolt gun the action doesnt get all that dirty. Barrel gets a decent amount so needs a patch or two more often than unspressed. Semi-auto...definitely dirty. My 300blk suppressed the cases come out just black with carbon. The upper and BCG get a lot dirtier as well. This is where a froglube or FireClean have helped to at least wipe off the majority of the carbon build up
 
The suppressor lengthens the pressure curve inside the barrel to be and makes more gas available to the semi/auto actions than they need. On the ARs you can use an adjustable gas block to tune this down and thereby make them run cleaner.