MR920- Mag sticking on reload

This is an MR920 frame with a Tyrant mag release and an OEM Glock 19 Gen 4 slide with an Agency Premiere barrel. When I load a mag if it's slightly canted forward (tipping toward the trigger) it's hitting something and sticks. I.E. it won't load the magazine. Not the end of the world but less than ideal and I've never run into this issue with an OEM Glock. Wonder if it's the Tyrant mag catch? Any help is appreciated. Thanks.