I want to try the vertical grip from MDT. https://mdttac.com/us_en/mdt-vertical-grip.html Anyone have experience with this grip on a McRee Chassis (or other similar)? I am hoping it will slide forward enough so i can get my trigger finger in a good position (close as possible to a 90). Hard to buy these things without trying them. I wear a medium to large glove, but have shorter fingers. Any insight would be appreciated.