There really aren’t many options that I know of for someone that is carrying a firearm or other tactical gear to be able to still stow his magazines ect. in his outwear and keep the rain off.   Woolrich Elite Series Tactical also has water proof pants that range in sizes from Small-XXL.   Make sure you check out the sizing guide on this one and don’t make any guesses.   Your XL shirt sizes don’t mean you  are going to fit in a XL pant.   I find this to be a good option in the Fall and Spring and it’s always nice to not have to throw on a large heavy coat when you don’t have to.

My Sig 226 9mm is a very large firearm and once of the best balanced 9mm there is.   I usually carry 3-4 15rd pistol magazines and the Woolrich Elite Parka holds all of them without printing.  The front pockets have elastic straps that will hold them in place and a pair of handcuffs and knife also keep me ready for work.   This is too heavy for summer carry, but it’s easy to roll it up and stuff it in the glove compartment or under a  seat if I need to put it away for a Season or two.