I'm building a custom G19 optic gun using a G19.3 frame. I'm planning to use the late Gen4 mags that are marked 1594-01. I noticed that these mags sit slightly lower in the frame and hang out the bottom slightly more than Gen3 Mags. It looks like GLOCK moved the mag catch notches slightly higher on these mags.
Are there any issues with this mag/frame combo?
Are there any issues with this mag/frame combo?