I cannot in good conscience recommend these suppressors for anything but the trash can and certainly not using on duty. I purchased the Eureka when it was sold by HTG two months later HTG was purchased by Black Rain Ordnance. I used it for a short period on my patrol rifle which is a Noveske 10.5 upper on an S&W registered lower. I used 55 grain department issued federal ammunition only and within 400 rounds it exploded. No joke my score on my department qualification was written down as “Exploded”. At my quarterly shoot on the last round of the day it made and odd sound and but for following good practices on the range it didn’t kill anyone. Literally if the officer to my right had not been in exact line with me he would have been riddled with chunks of steel and inconel. As it exploded it blew debris (jagged chunks of metal) into the targets to the right of mine and everything including the target bucket at the end of the range approximately 45 degrees from the tip of my barrel was pelted with the debris. If it had been a hostage situation I would have killed the hostage if they were within 15 feet of the suspect. The two armors who observed the incident said it was a clear malfunction of the device. By the dealer and manufacturer I was told it must have been my fault. First it must not have been threaded on tight enough. It had to be unthreaded with a wrench. That’s not it. Then it was the ammunitions fault. Factory Federal ammo, well that’s not it. Then it was the combination of a 1/7 twist rate spins a 55 grain bullet too much and break apart. Really? In a 10.5 barrel? Did you do the math before you jumped to that conclusion? A 20 barrel with the 55 grain bullet is best with a 1/9 twist right otherwise it over spins it right? So a 20” barrel with the optimum twist rate for a 55gr bullet has an RPM of 260,000 when it leaves the barrel and a 10.5 with a 1/7 twist rate has an RPM of 262,885, which is substantially similar compared to the 20” barrel with a 1/7 twist rate which is considered to be too much for a 55 grain bullet at 334,285.
Anyway it was deemed to my fault in some way but it really doesn’t matter because Black Rain Ordnance says they bought the assets not the liability from HTG, so I might as well crap in my hand and clap (they didn’t say that last part that is my own analysis after years of customer service management experience). I spent $575 (with tax) on a suppressor and $200 on a tax stamp and it’s a pile of crap. Then I was told that because I was LE as a good will gesture they would send me new baffles and end cap. Well that was six months ago and no parts. So unless you are willing to kill the victim or your own team or injure yourself, you may not want to risk buying one of these suppressors.