I have a new batch of camera mounts for sale. There are 8 in this batch, in these sizes:
(2) for 1.25" barrels (JBL, Aimrite Super Venom, larger hybrid tubes)
(2) for Rob Allen or larger Mako Barrels
(2) for 1.10" diameter Rabitech or smaller Mako barrels
(1) for 1" diameter hybrid barrel
(1) that is unfinished and can be bored to suit (for example to fit a 1.125" Aimrite aluminum Venom, or 1.170" CF Venom)
So far as I know, there have been no issues with fitting aluminum barrels, or carbon fiber barrels with molded in tracks, or narrow plastic ones. Erik Sun at Sumora did recently tell me that there can be some interference on carbon fiber barrels with wider glued-on plastic tracks. If the mount doesn't fit your gun right, or if you don't like it for any reason at all, I will pay return shipping and either adjust the mount or refund the price.
The 1.25" mounts are $60 shipped by Priority Mail. All others are $55 shipped.