9mm ar pistol - CMMG 9mm 8in Banshee Fixed Ejector Upper Group Receiver

This unit works well. I mounted a Sig red dot and Griffin Optimus 9 suppressor. I removed the OEM muzzle device and installed a Griffin taper lock. Measured bore to muzzle device with an alignment and it was good. Used 147 subsonic ammo and hit 10 out of 10 at 100yds on a 66% IPSC and then missed once at 150yds, raised my aim a bit and went 10 for 10. Shot 400 rounds through it with no trouble. Ejects were all 3:00 to 3:30 o'clock. It's quiet and the charging handle has a good fit but still got little gas blowback but not what I was expecting. All in all I'm glad I have it.