As far as the glocks jamming mine never did.And I have not heard of any jamming from my brother in law that is a nys trooper and they all carry 9mm glocks. I believe it is more the ammo than the gun. It says something in the owners manual about using the correct ammo. Cheap out on the ammo and what do you expect. And I believe It says not to use reloads also . I shot many rounds through the Glock I had and never had a problem. Another reason for guns jamming is not keeping them clean. A Glock would still be my first choice. And I did a search for the AMT Back-Up in .380 caliber And the forums talk about how much the jam. shawn