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2/8/2026 8:50:01 PM EDT
Hi guys and gals. Just like everyone else I’m taking advantage of the no tax stamp and surprisingly from what I hear quick approval times and I picked up a OCL Polo 30 for my 8” blackout. I’m completely new to the suppressor world and looking on some advice on what I might need to change to run reliably. Right now like I said it’s an PSA lower/Aero upper with a 8” Andro barrel and h2 buffer.  I have an Aero Breach ch on the way and from what I have been reading I’ll probably need an adjustable gas block. Any recommendations or advise I’m all ears for with what some of you have set up. Or any tips
2/9/2026 2:02:31 AM EDT
[#1]
Personally, I run a standard carbine or H buffer on my 8 to 9" 300blk.  I tune with the buffer and spring to run reliably on subs and slightly over-gassed on supers.  I'm not a big fan of adjustable gas blocks.
2/9/2026 2:31:19 AM EDT
[#2]
I'd run an A5 tube, G$ rifle spring and A5H1 buffer
“All things are said already, but since no one is listening, it is always necessary to start again.”
2/11/2026 9:51:51 PM EDT
[#3]
The Polo 30 does ok with .300 BO, but you'll get noticeably better results with other offerings that have more volume.
2/12/2026 1:35:08 PM EDT
[#4]
What ammo do you plan to shoot?

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