So I just finished assembling a 300BLK 9" Gun. I started with a hand stop, but I didnt like the way it felt.

I decided to put a 1.75" Radius cut at the top of a Magpul Vertical Grip and Direct Mount it.

It came out well and saves some weight plus rail sections, etc.

Just get someone with a mill to set their cutter to 1.75" Clamp in the grip and in 5 minutes you have it done.

As it thins the plastic slightly I Put in about .25" of epoxy to give it some rigidity. Redrilled the hole and mounted using the Magpul screw and backer.

Turned out well. I plan on cutting it shorter, but I like the radiused profile much better than the hand stop.

You can probably use this technique on just about any polymer grip.

Before:



After



And a close up.