They're both too big for a 45 cal pistol, for that matter so are the full sized Glocks. Of the 2, I preferred the FN but all of these guns are waaaay bulkier than an M&P45 and feel clubbish in your hand.
I agree about the Glock 21 but the H&K and especially the FNX is anything but bulky, in fact IMO, it’s a better fit and design than the P220 (did I just say something kinda negative about a SIG?) with a single stack mag. In addition, the grip texture on the FNX is very aggressive ensuring a very stable grip.
H&K and the FNX are both fantastic guns, as I have already said, my vote goes to the FNX.


















































