Shot the 3AT yesterday. It has about 350 rnds thru it. After 1 mag the gun would not fire...hammer went back but would not release to strike. Found the trigger pin out just a little. Poured loktite into the area and tapped it back with a puch...set it pretty hard.
Only my second problem...the first was the take down pin backing out while shooting. The YZ mod fixed that.
WATCH those trigger pins fellas! I'd inspect often. It could be important for those of you who carry these little pistols for protection.