Gemtech Mist Video

[myrdraal0]

The Gemtech MIST 22 is an integrated suppressor/barrel for use with 10/22 type receivers. This specific model will fit any standard 10/22 receiver (not Takedown) and is compatible with virtually any stock that accommodates a bull barrel. The barrel shroud is easily removed for access to the monolithic baffle core for cleaning and general maintenance.
Length 16.1"
Diameter: .920
Twist: 1:16" RH
Weight: 1 lbs 5 oz

https://www.youtube.com/watch?v=CdwFi7RziJI

[a_canadian]

Interesting, as it seems they're making both standard and takedown versions and rate both at 40dB reduction. I'd have expected some small difference in suppression considering the takedown version has such a reduced over the barrel volume, and apparently a much further forward port, resulting in at least slightly higher velocity. But they claim about 114dB for both:

http://www.gem-tech.com/store/pc/MIST-22-39p929.htm

Sounds very nice. And your test numbers go lower then Gemtech's, which is certainly better than the other way around.