Sorry to resurrect this topic, but the thought is bothering me a bit:
A proper compensator/muzzle brake is supposed to vent the gasses in a direction that counter-acts the torque that makes the barrel move upward. The degree that this may or may not happen seems debateable, but my question is this: does anyone know if the Beemiller comp is even designed to vent said gasses in a particular direction? When installed like the picture in the packaging, the vents are on the sides, not the top. If the vents are simply slits, that sends any counter-acting forces to the sides, not the top. That won't keep the barrel from moving upward at all.
Of course, all this comes to mind *after* I've purchased the Beemiller product, not before. But if what I suspect is true, I'll be sending it back and exchanging it for another magazine...