Re: Fighting. I generally leave that to folks on the internet who like to hear themselves talk.
Re: HK compacts. The BLACKSIDE suppressors weren't originally designed to be a "one size fits all" suppressor - it's light and short, made specifically for a military entity that requested what we came up with, which was the lightest, shortest, quietest suppressor that would function a 1911 properly. A boosted version was also developed for a pistol manufacturer that had a need for a military tender. Army and USMC end-users ended up being very happy with their Gemtech suppressors.
When we later released a commercial version of it on the civilian market, we did so with a short list of guns it had been tested and approved for usage on. The HK compact tactical did not exist at that time. When the compact tactical finally came out, naturally, we were interested to see if it functioned on that. It works 100% on the two CTs we have run it on, but I still wouldn't put it in the "bet your life on it" reliable on all HK compacts under all circumstances. I flew over to Germany a while ago to talk to the HK folks, and it turns out they changed the springs on the USP series guns, which means that while initial testing showed they worked 100%, some newer date ranges will be less reliable than others, so I generally would recommend a LID/boosted model for 100% cycling on the HK pistols to snowplow through guns that aren't broken in, or soft shooting ammo, etc.
The LID-variant of the BLACKSIDE is also because some people didn't read (or were sold them by dealers that didn't know what host guns they were made for) and put it on non-approved host weapons, with varying results... we didn't want to leave customers hanging, so when we released a version with a LID, we also did a retrofit program for people that wanted to put them on guns that it wasn't originally envisioned for, just charging the difference in parts between the boosted and unboosted cans, no labor charges.
Kel