I sold my mini grip and bought a Mini Stryker (903) instead. Haven't had it long, and already two springs have broken off! I haven't even used the knife! I have only played with it at home a bit. The first time one of the springs broke, the blade almost lost it's blade retention completely! Noticed it when I pull the knife out of my front pocket, the blade opened up quite a bit and just nicked me in the thigh. Luckily I didn't pull it out faster...(or else I might have teared up my pants!)
Didn't notice the broken spring at first, just thought it had crappy blade retention, and that I definitely wouldn't be carrying the knife around anymore! After changing the spring (luckily BM send me a more than one set of springs for my mini grip! seems to be the same spring for both knives) I got confident carrying it again. Just picked up the knife now to see that yet another spring is broken...Don't know when that broke, checked it not long ago to see if the springs were whole..
I have always thought that the springs on their axis locks seemed a bit weak, but didn't believe that BM would use it if it broke off all the time. Perhaps I just having bad luck with my BMs, but I'm not likely to buy anymore BMs with their axis lock. They're not exactly "cheap" knives, but I do like many of their designs.
Now I'm thinking of selling it... Just have to tell the buyer not to carry it around just in case

It's a shame since I modified the blade a bit, quite happy with the results
here