Anyone ever had a side lock break. Had a lone wolf extended break and cause my slide to lock back after every round until I removed it.

It broke off on the tab that holds the spring. Pretty much impossible to install wrong and my grip had nothing to do with it it broke.

I could see you getting the spring wrong but that's all. I would guess it was defective because the tab broke almost clean off.

 
I've had Lone Wolf slide stops that were too tight and rubbed the frame so that I had to dremel them down; but, never one where the spring actually broke.  It isn't difficult to install one of these stops incorrectly.  All you've got to do is to install the frame pins in the wrong order; and, voila, you've got a  problem!  The upper #1 pin should always go in first; AND, all the pins should be returned to the frame following, 'AR15 pin protocol' (right to left).  

Why is this a problem, anyway?  Don't you have a, 'Glock toolbox'?  I've got, at least, 3 extra slide stops ready-to-go in mine; but I, also, have a pretty heavy practice schedule.  I'm my own armorer; and I can't afford to have a Glock go down.  Extra springs, SLB's, RSA's, 2 or 3 slide lock springs, a set of pins, and a slide stop(s) are things you should always keep on-hand.  Just so you know:  Of all these spare parts it's the slide lock springs that are the most important to keep on hand.  If a slide lock spring breaks, (and I've seen it happen) the next time you pull the trigger the entire slide is going to go flying off the frame.  Mine get changed, at least, annually.

Yeah I have spares I just changed it out. Just didn't know if anyone had ever had the actual slide stop break. It broke where the spring connects.

Well, fortunately, it's not a biggie; and I doubt it'll occur again.  In more than 10 years of running Glocks I've both seen and heard about this rather common problem.  

Which is one of the reasons, 'Why' I never use a Glock's slide stop as a slide release.  Gun gamesmen like to do that; but, I'm not a gamesman; and I always release a Glock's slide by going H.O.T. (hand over top) with my support hand.

Been shooting Glocks 20 years and never seen it happen.  This is LE/Security:Lawful CCW/Range toys.

Can it happen?  Sure, machines fail.  But common?  I don't think so.

Thank you for sharing!  Maybe, though, you need to get out more.  

You are the only person who I've heard call this a common problem.

And if I got out any more, the closet door would shut behind me

Stock Glock=Perfection

This.  I don't know what the real advantage of the Lone Wolf parts are, but I've never used them.  As an LE Armorer, I'm only allowed to use Glock parts anyway, but I've never seen a stock Glock slide stop break.  I've seen 20+ year old Glocks just physically wear out the spring on it, and need to be replaced, but never actually break.

As another poster said, this is also why Glock makes it clear that it is not a slide release, but only a slide stop.  You should be pulling the slide violently to the rear to charge the gun anyway, for several reasons.  Operationally, it is better for the gun in all respects anyway.

+1