I've been curious about the twin tech adapters, I haven't seen a lot written about them. It looks like they just continue the diameter of the barrel all the way forward instead of flaring out like the other adapters do:
http://www.twintechtactical.com/M-P-Comp-22.html
The other adapters flare out to take up the slop in the slide, so is that an issue with the twin tech? And how snug is the o-ring engagement compared to the other adapters?
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