Anyone use one the JP Enterprises extended mag release, especially on a large frame Glock? One of the things about the G21, even the SF is that with my small hands getting to that small mag release is a bear. I really need to change my grip significantly. My current G21 is the ambi version and I use my index finger for mag changes, but even after MANY manipulations it still requires a gorilla push to release the mag. With that I am looking at going back to the standard release design, but would like a bigger button soy the I dont have to switch my grip too much. Looking at the JP Ent or THE Accessories units. This would be for a carry/defense gun that may see a couple of matches, but mostly carry.