Thread Adapters + Suppressors... Yes/No?

Shanerbanner10

Primer Denter
Full Member
Minuteman
  • Jan 13, 2012
    1,445
    279
    Oklahoma
    Hey guys. I have a 5/8-24 brake sitting around that works with my AAC 762-SD. My question is this: I've had a couple people warn me about thread adapters and suppressors. I purchased a 1/2-28 to 5/8-24 adapter from Precision Armament. The description says they are perfectly concentric and such. Are the warnings against the thread adapters warranted? Has anyone had issues?
     
    I believe the machinist's term is called "tolerance stacking"; and it's not known as a good thing. However, lots of folks do it with no ill results as long as everything is concentric. I've done it myself to run a Mac can on a 16" Colt 9 - PRETTY FUNNY LOOKING.

    my .02 - for not much more than the cost of an adapter, have the barrel threaded.
     
    I believe the machinist's term is called "tolerance stacking"; and it's not known as a good thing. However, lots of folks do it with no ill results as long as everything is concentric. I've done it myself to run a Mac can on a 16" Colt 9 - PRETTY FUNNY LOOKING.

    my .02 - for not much more than the cost of an adapter, have the barrel threaded.

    The barrel is already threaded at 1/2-28 (obviously). Average cost to rethread a barrel around here - ~$100, might as well get it timed while I'm at it, throw in another $20. Well at that point i'm $120 ish in and the 1/2-28 brake is $135. Seeing as an adapter is $25 I couldn't justify the extra 100$ for another brake or having work done to the barrel that I really don't want to cut back.
     
    Ok, just offering to help here. Tell ya what, give AAC a call and ask them what they think. Then call 3 other suppressor mfg's and ask what they think. The cost of the job done correctly will offset a future suppressor repair and a 25 dollar adapter. Your choice, obviously.

    I come to this forum looking for info, which i take with a grain of salt; i bounce that off of what i know as fact, then form an opinion.

    There is a ton of good info here, some bad too.

    Please, before you reply here, make that call.

    Best of luck to you.
    Dave
     
    Ok, just offering to help here. Tell ya what, give AAC a call and ask them what they think. Then call 3 other suppressor mfg's and ask what they think. The cost of the job done correctly will offset a future suppressor repair and a 25 dollar adapter. Your choice, obviously.

    I come to this forum looking for info, which i take with a grain of salt; i bounce that off of what i know as fact, then form an opinion.

    There is a ton of good info here, some bad too.

    Please, before you reply here, make that call.

    Best of luck to you.
    Dave

    Thanks Dave. I appreciate the input.

    Talked to AAC and they suggested not to even try it, also that it would void the warranty. The said "It would not work..." reason behind this was "adding up tolerances will lead to baffle strikes" meaning the .0001 tolerances on the thread pitch adapter (from the description of the item) and the .00___ tolerance on the WOA barrel's threads would lead to .00__? of being non concentric. Thus leading to baffle strikes.

    So that leads to my next question - since there is .00__ of tolerance in there, would it be ok to use a .30 cal can? Would the bullet diameter be small enough to allow for those 'non concentric tolerances'?
     
    I'm very happy to help and glad you got it from the people that know more than me.

    Short answer - yes. i wouldn't, but thats me

    It's the whole potential thread loosening thing that would drive me nuts. If you worry about one set of threads, imagine what two sets would do....You'd be reaching to tighten the can/threads after every few shots; at least i would. I did that Colt 9 \ Mac can thing back when i didn't know better.

    Dave
     
    I assumed you meant a .223 through a .30 can?

    Also, after the 3,546,734th time you've reached to tighten the threads and think that it's never going to loosen, you'll forget about it and discover the ding in your $1000.00 can that night when you are cleaning your guns.

    Do the smart thing....you've done it once already today.
     
    I was already pretty skeptical at the beginning, then the first couple responses came in and I was pretty pumped thinking I wouldn't have any issues. After speaking with AAC, I likely not even mess with it. Kinda sucks having a can and not being able to use it very often lol. Such is life - poor planning. Hell it was my first can and its been fun. Now I know better. Appreciate it guys.
     
    well that sucks . I have a yankee hill 7.62 phantom Q.D. and they make the adaptors for several thread pitches . I use my can on 308, 300 blackout and 5.56 no problemo . I could use it with 22lr but Im afraid of leading .
     
    The price of the adapter wasn't really what got me and I'm usually not the person to take the cheap way out. The adapters description and reviews were what sold me on it. I wish I could have used the 1/2-28 brake I had on my 13.7" barrel but it got a little to messed up upon removing the pin and all that stuff. Such is life. Now to just go see what the hell this rifle will do without a can :(. haha