Hesychia 556 UK
For anybody who might have been looking into one of these, I highly recommend. Mine came in right at the advertised length of ~4.75”. Just a tad heavy at 13.7oz which from what I can gather is in tolerance and acceptable across the board for LPBF printing for non solid objects, just over 5% heavier than anticipated. The hybrid flash hider was right at 3.2oz, same scenario as the suppressor itself, just 3% heavier than anticipated.
Flash was very good I would say for being such a short suppressor. About a 3-4 inch flame about the width of my finger. Mind you I am NOT using the recommended flow enhancer and opted for the micro flash hider. See my comment for flash test video. All shooting was done with PMC X-tac 55gr 5.56mm
Sound was good although I have no equipment to take actual readings. Significantly quieter compared to my RC2 mini. I was able to shoot approximately 90 rounds with no ear pro over a couple of hours with zero ringing in my ears, and no subsequent headaches or anything. (I understand this is not advisable but frankly I got lost in how nice the tone was at the ear that I just continued to shoot for a while.)
Gas to the face is also reduced adequately and I saw a significant improvement over my RC2 mini. No carbon locking issues or perceivable POI shifts with the hesion bow mount. Mind you this is just with what I could observe shooting steel, I will be doing a more thorough test on paper sometime this month.