Kel-Tec Factory Threaded PMR-30 Barrel
$118 plus shipping will score you this barrel direct from KT:
We didn't get any key holing or extremely poor accuracy so that's a plus. We did have a few failure to feeds, but it could be that the gun doesn't like going 500+ rounds without a cleaning.
The flash hider pretty much eliminates any visible day time flash. We will definitely try it at night :)
Camera(s): Canon HF R500, GoPro HD Hero 3+ Black Edition, iPhone 6
Edited with: Adobe Premiere Elements 12
Audio: Zoom H5