While it may not be a fair comparison to recreational shooters , a buddy of mine owns an indoor commercial range in Mississippi . He rents guns but you buy his targets and ammo . The ammo is mostly fmj Federal AE but he'll sell anything . 3 years ago he got rid of his last 1911 because they were costing him too much profit . His guns get hammered all day long . A variety of 1911's over the years with serious frame and slide cracking between 30,000 and 50,000 rounds with full house ammo . He now rents Glocks , Sigs and H&K's with some cheaper semi smaller pistols . He expects around 150,000 rounds from the Glocks before a frame or slide major failure , 120,000 rounds from a Sig and 90,000 from an H&K . His guns go 16 hours per day and he has lots of them . On his say i purchased a Glock 21 in .45 acp , cleaned it after 50 rounds and haven't cleaned it for the next 12,000 . Not one failure . I've had several 1911's and own one now and the one i own is stamped Property Of The US Army on one side and US Government on the other , a WW11 era pistol so it's at least 50 years older then my Glock but i seriously doubt that it's had 12,000 full house rounds through it and i do clear jams . From Glockmiester i ordered enough spare parts to rebuild my 21 - 5 times over and i've never swapped out a broken part . I have an extended mag and slide release , a full competition trigger group , a captured titanium main spring and night sights along with a bin filled with parts that i'll probably never need . I like the gun so much i bought a second 21 for my son that never gets used , maybe 1 box and a 17 for myself . I don't down load and although i have a spare barrel for cast bullets i've never used it . FMJ's and HP's because that's what i like . Your mileage may vary . On the plus 1911 side i like the slim profile and i have had a couple of 1911's that would out shoot my Glock from a bench at 20 yards , but not by much . Before making a decision maybe contact TSE as they rent guns that get hammered . I have no idea what they rent but i'd suspect they have 1911's and Glocks .