I'm approaching completion of my first build and am trying to choose a comp.
I'm small frame so I need something that does a good job with mitigating recoil and muzzle bounce. Would also like minimum flash possible. I'm currently looking at either the BCM gunfighter mod 0 and the epsilon 556 by VG6.
What are pros and cons to these two? Are there any better choices?

I like the looks of that. Anyone have vids or comparisons to other comps. I'd be really interested in seeing how it compares to an a2 at night.

I have the BCM Gunfighter mod 1 on my 14.5". Works really well. Only a tiny bit louder and you might piss off the guys next to you when you're shooting near them, but that goes with any compensator. I would go with that or a surefire procomp

I also have a BCM on my 14.7" PSA {pinned}...I like it a lot, shoots a bit smoother than the standard flash hider.

Unfortunately, you can't make one muzzle device do everything well, there will always be tradeoffs. A specialized device (like a pure flash hider) will always perform its single function better than a hybrid that tries to accomplish more than function (like a combination compensator/flash hider).

Brakes/compensators excel at recoil control & taming muzzle rise but at the cost of large muzzle flash and muzzle blast.
Flash hiders excel at concealing muzzle flash but do little to control recoil or muzzle rise.
Linear compensators excel at directly muzzle blast forward but do little for muzzle flash, recoil control or muzzle rise.
Hybrids can do a good job of multiple functions but can't excel at them all (it's those pesky laws of physics).
You have to choose which function(s) are most important to you from a muzzle device.

The T3 above looks interesting but I haven't been able to find much data I can use to compare it to other muzzle devices.
I'm currently using the BCM Mod 0 on my 16"' bbls and am surprisingly pleased w/its hybrid performance although I wish there was a little less muzzle flash (however, for me controllability is more important than reducing muzzle flash, YMMV).
HTH...
Tomac

This Smith Brake:

Just going to leave this...Similar topic I started a few days back

Hope that helps!

Results of a compensator comparison by TTAG.

Listed in order of highest reduction first.  For what it's worth, based solely on recoil reduction:

First - the AR has such significantly reduced recoil that trying to finess the levels is top tier competition level effort. If you have been shooting 1,000 rounds a weak you likely have already been handed one with the makers tech sheet telling you it fits your shooting style. We are talking .01" of a second on a square range effort.

On the other hand, if you plan to do more than compete with it wearing custom Under Armor team shirts, then two other factors are more important. The ability to control flash which may reduce your night vision, and how it releases sound waves which impact on your hearing, and the guy in the lane next to you, on the range or in the field.

A huge ball of fire isn't real good for home defense, and knocking down people next to you isn't nice either. Most recoil reduction brakes work by passing the gas off to the side and downward. Some are so effective that they actually bend the barrel, and many are quite capable of clearing a range. Once you discover your ears ringing even with good muffs, you might begin to question if a brake is really worth the concussion. Those who hunt with them conclude they don't need the recoil reduction or muzzle rise compensation on a rifle being shot once or twice at a live target. Goes to the A2 actually being a good compromise, and certainly a good bargain price compared to the rest.

I bought a Black River Tactical, It's on my 6.8 hunting rifle. It already had a little kick due to it having 50% more power than 5.56, but the real benefit is shooting it in the woods - it directs most of the sound forward. I can put down three to four shots and my ears don't ring. A brake can damage your hearing with just one shot.

Look to what the rifle is going to do most of the time, a lot of muzzle devices are sold because they can be, some are made as a 3Gun race gun part, and others are built along the lines of working in a tactical team side by side. Trading of the qualities of one aspect to enhance another isn't always what you want.

if you're ever going to run a suppressor, you'll want to look into them first and pick a brake/flash hider based on what works best with your suppressor.

I'm waiting on my AAC paperwork to clear.. so you can guess which route I went.
I have two different devices, both with a 51-tooth pattern.  One on a scoped flattop rifle, the other on my SBR so the suppressor will slide from one to the other effortlessly.