School me on trigger frames

[Natman]

I was thinking it would sure be nice to have a more comfortable grip on my MR1 until I realized there's very little out there that fits. So what kind of grip and/or frames will actually fit without modifications? I don't need the e-trigger but it would be cool to have better response on the stock trigger if that was possible.
thanks

[irishwarrior]

You could try and shorten the trigger pull.

[xxdavis06xx]

Bob long 45 frame and then you can readily find grips also