I was shooting a Hi-Point automatic pistol 9mm with Blazer 9mm 115g bullets. The casing from the 4th bullet on the 2nd round came back and hit my mouth, completely pulvarizing my upper front tooth and chipping my bottom tooth. This was completely unexpected. This has never happened before using Blazer but suspect it was the ammo from what others have been posting, not the gun. However, some blogs have said it could be the gun/ammo combo not "getting along". When reviewing the video footage we took, my stance and grip was dead-on. This was an expensive lesson and a risk for others.