AAC T9s and 300 BLK

Preparedness Depot in Acworth, GA

Red Dawn

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Ok my AAC Tirant 9s is close to being approved I hope at 5 months on the 29th give or take. So here's my setback I'm gonna use this on my pistol however I'd like to mount this on a 300 BLK AR and shoot subsonics but there's no adapter. I talked to AAC they said try QRF and they said get the 300 BLK barrel threaded 1/2x28. Any thoughts?
 

Red Dawn

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@Righter13 im taking the easier route on this. Having it threaded I guess would be easier than finding an adapter I think. Who would even make an adapter for that.

If I could get another can I would. Believe me.
 

Righter13

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Red Dawn

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I like it thanks @Righter13 also We need to have another shop M&G when you come back down this way what you think. We can go over how it works and put 1 together and try it out in the shop.
 
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boss_hawg

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Does a 1/2x28 thread on a 300 barrel leave too little metal around the crown to function reliably long-term? If not, that may be your best bet.
 

Red Dawn

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Does a 1/2x28 thread on a 300 barrel leave too little metal around the crown to function reliably long-term? If not, that may be your best bet.
Not from what I've read. With the subsonic level of course not supersonic and in this case that's the whole reason for shooting this rifle.
 

boss_hawg

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shooting supers through a tirant 9 is probably not a good idea no matter how you're attached it to your barrel.
 

Red Dawn

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shooting supers through a tirant 9 is probably not a good idea no matter how you're attached it to your barrel.
I only plan to use subs for this application. I wouldn't shoot it a lot it would only be to shoot suppressed and AAC says you can shoot subs but never supers. The first baffle is steel and the rest are aluminum.
 
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Red Dawn

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Is this your picture? The rear cap should not come apart like that. The blast shield should not be separated from the rear cap.
Yes this pick is mine. Well it was sent to me by the stamp holder. Should I red thread lock or rock set it.
 

DarthVader

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Yes this pick is mine. Well it was sent to me by the stamp holder. Should I red thread lock or rock set it.
You bought it used?

Simple fix. First, clean the threads thoroughly. I mean spotless. Then degrease with acetone. Once it has dried completely, apply red loctite to the threads and crank it on as hard as you can by hand. Let the loctite set up for 24 hours. Good to go.
 
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Red Dawn

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Yeah I traded a Glock for it. The suppressor was hardly even used so it needed a good home to get proper use of it.
 

boss_hawg

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You bought it used?

Simple fix. First, clean the threads thoroughly. I mean spotless. Then degrease with acetone. Once it has dried completely, apply red loctite to the threads and crank it on as hard as you can by hand. Let the loctite set up for 24 hours. Good to go.
I might even use two strap wrenches to get it super tight
 
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