Considering a Faxon Pencil pinned 14.5" build. How effective is the flash hider on this relative to an A2?

I too would like to see some testing of the SLIM line (brake and FH)

Any ETA to these coming in stock?  I can't find a retailer that has any?

The Slim brakes and flash hiders are not going to be as effective as their full size counterparts. While they are more effective than one may think, their main purpose is to be slim! Here's a video of Skinny Medic and Sootch shooting one of the slim brakes: https://youtu.be/k0TRiTbMTpI?t=1m48s

We actually haven't compared the Slim flash hider to a traditional A2.

It likely won't be for another 4 weeks or so until somebody has the stand alone muzzle devices in stock. We will be shipping 10x 14.5" Gunners w/ pinned flash hiders to Optics Planet early next week.