ZEV Technologies Core Elite Pistol .300 Blackout Black Pistol

Nothing but problems....

Nothing but problems. 1st issue - It doesn't cycle subsonic ammo and ZEVs answer is we didn't test the firearm with subsonic rounds, we only guarentee it works with supersonic ammo. Seems rediculous but that is their answer. So, if you're going to use this with subsonic ammo you'll need to either buy a supressor or a load of didferent buffers and springs until you find the right combination that will cycle correctly. 2nd issue - it will not initially chamber hollow point (or HPBT) rounds from any of the 5 different manufacturers I've tried. The HP gets stuck on the star chamber and I have to use the forward assist and pray it's correctly seated. This happens successfully about 1 out of 10 tries. I attribute this to the shotened breach they designed (on purpose) it truly is a horrendous design for a Home or Self Defense weapon. If you are planning on using HP bullets with this pistol look elsewhere for a more reliable AR option. This thing is just horrible. It works fine with TMC or FMJ but I specifically bought this firearm for use home defense using subsonic HP ammo. I read glorious reviews of this pistol so I bought it. If I could go back in time I would buy a more proven brand. I have shot many 300 BO pistols from different manufacturers that work flawlessly with subsonic HP rounds. This was an absolute waste of money for my intended use. Shame on ZEV.