Toxic Matrix, Halo B, AKA SCM LPR, 68 4500, and a 14 or 16" UL
Super-so-cosistent. +/-3fps on a bad day.
It's short. Mine doesn't want to come apart.
Give it a little break in time (a couple thousand shots or so) and this baby rips! The only bad thing I've heard is that it is short, but it works great on my trix as a foregrip with the length of standard matrix ASA. I didn't get the extensions and am glad that I saved the money, but they are available to make this bad boy any length you want. It was easy to open and lube the piston when I got it, but has clamped down pretty hard now and I haven't been able to open it with two strap wrenches because the bottom half is tapered and the strap wrench doesn't hold it well. It hasn't mattered yet because it has been flawless so far, but...... It is adjustable on the bottom with an allen key wrench and is super sensitive. It has two holes to put either air fitting, gauge, or included grub screw into. This helped with the grip because after I screwed it onto my trix it was obvious that the air fitting should go on the side that faced the trigger guard--leaving the front side of the reg smooth for a foregrip as the grub screw was flush with the body of the reg. This thing put my old gladiator into the spare parts kit--tempermental and never as consistent. All of this is actually extra details as this reg is SUPER consistent so what else do you really need to know.
Works outstanding. Just like the Sidewinder, it is consistent and has it's own unique look.