Is the VG6 Precision Epsilon muzzle device as good as reviews say? - AR15.COM
VG6 Precision CAGE Device Muzzle Blast Diverter -The Firearm Blog
VG6 CAGE Device
AERO PRECISION CAGE DEVICE | Brownells
something happened during testing | cage, vibration, video recording | Here's interesting video. We've recording some slo-mo video about our AK. Watching some vibration and how the our EPSILON AK and CAGE