Love vg6 brakes/compensators - VG6 Precision EPSILON 556SL Muzzle Brake

So, this is the fourth VG6 brake I've purchased. A few 556 Epsilons, a Gamma and now the Epsilon 556SL. Not only does it keep my shooting flat, it matches the diameter of my barrel perfectly, as advertised. One added note. I also own a VG6 cage that I misplaced the little locking key when moving it to a different rifle. Without it, the device is useless. I contacted VG6 customer service, asking if I could purchase one. They responded the next day and said they would just send me another locking key free of charge. Now that's a great company!
Buy one.