Currently a Battlefield Green Glock 43 with Trijicon RMRcc in a Tier 1 holster. Soon to be Battlefield Green 43X or 48 with Trijicon RMRcc as soon as I order a new store 1 holster.
I put my G19 upper on my G26 lower and see if I like this combination. I've fired 50 rounds and it operates fine. This gives me the sight radius and weight of a 19 with an inch shorter grip of the 26. I like to remain "concealed". Can carry a G19 extra mag. This is like the 1911 style CCO with Commander slide on Officer lower.