I run the ATI Tactical version of the Mossberg 500. The adapter changed my gun for the better. I use this weapon for home defense and I’ve never loved the side saddle. Running this adapter with Agulia ammo has given me the capability to get rid of the side saddle and run twelve rounds in the gun. The ammo runs flawlessly with the adapter and I’m willing to trust this adapter with my life and safety of my family. Helping me carry all that ammo in the gun has me prepared for most home invasion scenarios and I’m extremely pleased with this adapter. I’ve shot five hundred rounds with no problems at all.