Here you have a Glock Pro Trigger in my Glock C V - which, as many know, the V Series is not compatible with these triggers. That didn't stop me from putting one in mine, and in case anyone doesn't know, it's actually pretty damn easy - all you need a razor blade. Before you freak out, let me explain (obviously, I'm not liable for any injuries or damage to the gun one sustains modifying crap like this - I'm not telling you to do this, I'm just telling you HOW I did it, myself):

  
Normally, if you drop a Glock Pro Trigger straight into a V Series, it almost fits, but you REALLY have to mash down on the back part of it to get the pin in...and when you do this, there's a spot that sticks just a little bit up at a curve, because it's mashed against the frame beneath, and causes the slide to not go back. Found that out the hard way when I first tried to put it in. All that piece is, is a piece of plastic protruding out, and on a regular V Series trigger, that piece of plastic is a flat rectangle. On the Glock Pro Trigger (and non-V Series in general? My C V is the first Glock I've ever owned), that piece has a bit of extra plastic at the bottom, kind of shaped like an upside down halfpipe. All I did was take a razor blade and shave the underside of that to make it flat beneath like the V Series trigger, and everything works just fine. No more fit issues - drops straight in, gun works just fine, have not experienced any issues whatsoever in my testing. Literally just fired over 200 rounds at the range earlier this morning with it and had no malfunctions. 200 rounds in boxes, and then 28 rounds in magazines I had on me, and that's all I had. Gun didn't horribly explode in my face or anything like that.

  
Not sure how widely known this is, but it's very easy to do, and I've done it on mine and just thought I'd share. Maybe they'll make a Pro Trigger just for the V Series in time, but it's easy enough to modify one as it is and make it fit. No need to dremel the frame, literally just take a razor blade to one small piece on the trigger itself. Five minutes, done. I have to say, the Pro Trigger is so much smoother than the original, even if it's still not the greatest trigger in the world.

  
Yes, I know my gun has rainbow grip tape. I'm very proud of it.

V Series Glock Pro Trigger