Hi Guys,
I thought I'd throw my .002 worth in here since you seem to be discussing my upper.
My brake design is similar to the AR-50(tm) or the Barret 99(tm)
The idea behind a muzzle brake is to dump the gas as fast as possible to reduce the recoil impulse. (think about it... The Paladin howitzer uses a 2 gill brake)
More ports have actually proven much less effective than the 2 gill design I have on the upper. This is because the gas can't all dump in the first port or two and the pressure drops slower. The plus side to a brake with more ports is the muzzle blast is dampened (not attenuated - just not amplified) They ARE quieter that a 2 port brake, but what the hell, we're talking 50's here!
As for the recoil pads.
I offer a custom silicone pad and riser that fits the ACE ARFX stock, and a Custom pad for the Magpul Tactical (replaces the whole back of the stock on the magpul) - I DO plan on doing a A2 Pad that will screw on, but don't have the time right now with all the uppers going out the door.
If you want a decent store bought pad, the best one I have had experience with is the X-coil pad by Tru-glow. You must do some custom fitting with a beltsander or live with an ugly pad, but they work great. I have 2 of these on a couple diffrent 50's and they work great.
Let me know if you guys have any other ????
Thanks
Chris Rosequist
President
Bohica Arms Corp