early models were known for frame bulge. everyone claims this doesn't affect operation. still seems sketchy to me. the thing that bugged me the most was the wedge-shaped way the slide fit to the frame. any other gun has a rectangular shaped trough on the frame that the slide rides in. the p-07 is angular. i could definitely seem frame bulge causing the slide to pop right off. as far as i know, this has never been observed, but i'd hate to be the first.
the only other complaint i have is the overly aggressive texturing and sharp edges that don't make it a comfortable carry gun.
Favorite range gun for the money - CZ 75B or STI Spartan V 9mm
Go-to carry setup - Walther PPS or PPQ in FIST kydex holster 1AK
Favorite semi-auto design - HK P7
"A Sig is like a lightsaber - not as clumsy or random as a Glock."