In my never ending quest to make life more complicated than it needs to be in terms of guns and gear related stuff, I've played with Keymo, YHM Phantom and the Kurz, Griffin Plan A and Q Plan B.
@
Magsz isn't alone in not caring for Keymo. On top of being unobtanium at times, at a retail price of $250, with street price from vendors like Hansohn Brothers around $199, it's expensive as hell for what it is, which is a taper mount that makes a ratcheting noise.
The
YHM Phantom is solid, with thicccc Acme threads, taper seal, and the secondary spring loaded locking mechanism, it locks up tight and stays put. It's ugly as sin though.
That led me to try the
YHM Kurz. It's basically a shortened Phantom QD adapter that reduces the length by .6" or so.
Still not able to leave well enough alone, I decided to try the Griffin Plan A and Q Plan B. I was able to pick up both along with muzzle devices from the GAFS subreddit on Reddit. In terms of lockup, I felt like the Plan A and Plan B were equal. The downside to the YHM Kurz, Plan A and Plan B was they increased back pressure, and increased the decibel level over the Phantom and Keymo. Apparently letting the blast chamber do it's work and not cramming the muzzle device all the way to just behind the blast baffle is more important that I initially estimated. I'm not talking just on a decibel meter, I don't even have one, I'm talking about it was noticeably louder to the ear.
So after all that farting around, spending money, selling off mounts and muzzle devices I wasn't gonna use, I'm back to the full length Phantom QD that came with my Turbo T2 and I'm done swapping and trying mounts.