Almost fit... 4 stars - SIG SAUER Barrel, Threaded, 220, 45, Chr

The finish of the barrel has a rough flat finish and not polished at all like the original barrel. I'll fix that... I dropped the barrel into the slide. The slide would not drop the barrel down to cycle the action. I had to press the barrel down to clear the slide so it would come back. Then, I found that the slide would not come all the way to lock it back. I compared the original to the new and they seem to be the same. The slide just would not come all the back! I started looking closer and measured. What I found was the feed ramp was just a few thou too long and was hitting inside on the frame. Once I remove the excess, the slide functioned as expected. I used a dremal with a grinding disk to remove the metal. I'll polish the ramp and all will be good! 4 stars because it wasn't a drop and go replacement.