I have the same ATI pistol but in the Commander model. I own a number of higher end 1911's but was looking for a "beater". But after getting home and cleaning this gun up, I was actually amazed at quality of the slide to frame fit. In all seriousness, it's very well fit. Frankly, I can't believe the gun is so inexpensive. I think I paid $402. In fact, the fit is better than other 1911's that cost twice as much. Mine has been 100% reliable out of the box and surprisingly very accurate. On the negative side, I'm not a big fan of the stock grips or the standard GI sights....both easy fixes. IMO, these ATI's are a absolute bargain.