All I can offer is some of my experiences with the 34 I shoot in IDPA, etc. A great pistol by the way! You didn't mention the intended use but the 35 is a pussycat to shoot, obviously the 34 is even more so. You might want to look @ the inside of the slide on a 34 to compare it to a 35. even compared to a G17 the 34 has pretty extensive milling done to the interior of the slide to Hog out a lot of weight. Suspect this has a lot to do with being able to cycle all "power factors" of 9 mm ammo.