Jay I feel for ya, my feedback on Ceiner is very negative on the glock, I've owned 2 for 1911 and they did work pretty well and were decently accurate, 2 1/2" at 25 yards. The negativity on the glock is failure to feed, failure to eject, if the round makes it into the chamber it will go bang.
On the advantage, I hear better news, but not great, some work some don't, I have not dealt with them directly, but their customer service has to be better than ciener, I'd call him a d**k, but that's part of a man and it has a head on it.

His customer service has a well earned reputation for abysmal and he is arrogant. I was complimenting him at the shot show for his 1911 conversion and how well it shot, He asked what kind of groups I was getting, and I said 2 1/2" at 25, and he said you must not know how to shoot, it should shoot an inch all day.

Here is a little clue for everybody, if you can shoot an iron sight pistol into 2 1/2" at 25 yards as a rule, and these were 10 round groups, you can probably shoot an inch if the pistol is capable. Off the bench of course. I hate to recommend the 1911 conversions due to the man, not the product.