Build Thread PSA 300 Blackout Suppressed Input

[lhpdx13]

I'm thinking of picking up a PSA 10.5" 300AAC Blackout Pistol. I like the price.
Does anyone have expereince to share about this pistol running suppressed with subsonic rounds?

Thanks!

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[aljames]

I've had a few PSA BO uppers and they have all ran perfectly both suppressed and without a can. They ate up super and subsonic rounds. If its an upper that you want to keep forever I would recommend the CHF barreled uppers. Pics when you get it!

 

[Buddy1211]

I recently picked up one of their 10.5 .300bo uppers for a cheap pistol build. It wouldn't run at all with 200gr magtech or 200gr Winchester.( have had great success in my other .300bo with these) With a yhm r9 on it. Pulled all the weight out of the buffer no different. tried a couple different buffer springs no different. Made sure it had a gas port drilled in it. Gas block is pinned and didn't appear crooked. I ended up taking a bcg out of a different build I brought out popped it an hey! It had all the bolt velocity. ( I hadn't put any weight back in the buffer ooops!) put the weight back in and it sang with the worn bcg. Put the new psa bcg that had maybe 20rds on it as a bolt action, it in my other build and it wouldn't run??? I suspect that something is out of spec with the psa bcg or bolt that came with the new upper. It's still covered in carbon on my work bench i haven't done any investigation on it yet….tldr just bought one! The bolt and or carrier was wack and had to dig in the stash and replace it with a brand used one. After that ran great with subs and a r9. Pretty darn accurate to 50yds too!

 

[lhpdx13]

That sounds like a lot of work to figure it out, glad to hear you got it figured out! I wouldn't know where to start.

 

[JDubDub]

I have an 8.5" PSA build. Still waiting on a suppressor, but soon. 100% reliable with my 150gr supersonic reloads. It took a bit of fiddling with my COL to get the 220gr subsonic loads to the same level of reliability, but I figured it out. Most important thing is to run GI mags for the subs. Magpuls are great for the supers, but didn't like the ogive on the subs.

 

[Buddy1211]

That sounds like a lot of work to figure it out, glad to hear you got it figured out! I wouldn't know where to start.

I like to tinker, I have a pretty bad case of restless rifle syndrome and with that sometimes they don't always run right the first time they go out so whenever I bring a newly assembled project out I tend to bring a few tools assuming something will need hit with a hammer or stripped all the way out with the wrong screwdriver hahaha