So Ill spare you the details on how this happened but basically I put a light on the rail of my brand new Gen 4 19 and it would appear that it was tightened on enough causing it to tear up my rail and frame a bit. The reason Im posting on here is because Im curious if theres a way to trim that down or smooth it out any, not that its a huge deal at all but its somewhat inconvenient to the eye. Any tips or help would be greatly appreciated.
Personally, I’d just knock it down with some course sand paper. Finish up with some fine grit, and call it a day.
I would call glock and send them these photos, I have heard that they take care of you. Though I have not used their CS personally.
Dude!
Did you use a cheater bar to tighten that light down or what? I hope that Glock helps you, but I bet you’re going to buy a new frame.
What kind of light was it?
I would do what opmike suggested. Maybe use a medium file somewhere in the mix too.
But if you file it, it may not have enough surface for the light to mount.
Its toast - I will give you a hundred bucks for it to ease your pain 
Seriously take a dremel at low speed and carefully smooth it out and shoot the snot out of it.
I’d really like to know what kind of light that was.
Looks like a x300 or tlr-1 would still work even with the bulged material removed.
I personally would do it.
Did you have the proper insert key for the light mount?
The notch for Glocks is narrower than the 1913 Picatinny notch. It looks like you tried to force the light on the rail and when it didn’t grab the rail evenly, because the 1913 key won’t fit into the Glock slot, you tried to crank down on the knob which caused the clamp to grab the rail at an angle creating that deformation.
Thats mainly what Im worried about when I think about dremeling or sanding it down…
Also it was just a cheap light that I (for some stupid reason) thought would fit correctly and didnt tighten down enough at all apparently.
This never would have happened with a Gen3. :lol:
Well, I’ve got a ding-dinger too on my G19 that I can’t figure out what/when/how? Nevertheless, I’m not overly concerned about it now. Hope you get yours “squared” away!
I would sand it down as well. No offense but at this point what more harm is it going to do.
Its just some character marks… 
Any tips or help would be greatly appreciated.
Don’t do that again…
Bah. Just sand it down. Stipple the grips and some other stuff while you are at it and who can tell?
You should see how one looks after having a rapelling rope rub a hole through the frame. It still worked fine until it was retired…several years later.
I would not use a dremel…even at low speed it will likely melt the plastic. This would then build up and be a pain to smooth out. Start with a light file, then progressively fine sandpapers. Scuff with a scotch bright pad at the and to knock any shine off of it.
I’ve used this technique on various plastics with very good sucess.
I thought Glocks were dropped from helicopters at 50,000 feet onto kryptonite and survived without a scratch? 
On a more serious note, I would NOT file it down or do ANYTHING to it before talking things over with Glock CS. If you sand it down and decide later that you want it back the way it was stock (undamaged), it’ll be too late.