Broke before 200 rounds - LPA Adjustable White Dot Sight - MPS2 (Baby-eagle, H&K Jericho, Striker)

I just inherited my dad's jericho 941 in 45acp and he told me that due to its special size and caliber it has a tendency to shoot really low so I would have to find an adjustable sight for it. I was lucky to find these that look just like the factory sights and at a good price. I put it on and it has a little hump in it that makes it over sized but shears off when you put it on. I go for the first time to sight it in and it's right on the dot, I'm surprised and only shoot a few rounds and go home very happy and excited. Second time I use these sights and we easily go for 150 rounds and every one has a blast. Today I took a friend out but couldn't hit anything, I give it a look and the up/down adjustable screw snapped in half and now just flopps around. I'm very pissed and so is my dad as it was his baby. I only wish this sight was able to post photos to show the broken sight. Everything else is great but I'm very sad that the quality of the sight didn't meet the hype. Now as I look again this is the only sight that fits that's adjustable.