I have the 6.8 version on my 6.8 SPC.VG6 Precision Gamma 65 BBSS Muzzle Device
Shop VG6 Precision Gamma 65 BBSS Muzzle Device | 4.2 Star Rating on 9 Reviews for VG6 Precision Gamma 65 BBSS Muzzle Device + Free Shipping over $49.www.opticsplanet.com
VG6 Precision Gamma 65 Muzzle Device APVG100016A Color: Black, Finish: Black Nitride, w/ Free S&H
These are excellent. I have 5, including one on my Bergara 6.5 CM.