Yes, it does. I know this because I bought one today!!!I know my Colts XSE's came with the FLGR. I believe the new rollmark series 1991 has a standard length guide rod.
After only a few days of making this thread, I decided to go with a blued 1991 NRM commander. It's funny how it happened actually. I drove an hour to take my girlfriend to lunch at this japanese steakhouse we like, and I simply suggested that we stop by this small gun shop that usually has a huge selection of handguns to choose from. Turns out they had TWO NIB blued-finish 1991 NRM commanders, and a stainless one too! I was only interested in a blued one though..
One of the two was noticeably better-made than the other. I took the better one The other LOOKED exactly the same, but upon further inspection I noticed the frame/slide fit was much looser, and there were at least two obvious flat spots on the barrel! The gun was a rattling machine. The Colt gunsmith that made that one did a poor job, and IMO the gun shouldn't have left the factory. Unacceptable..but at least the one I chose was excellent!!
The frame/slide is snug and doesn't rattle at all when I shake the gun around in my hand, but it still has a good amount of play to it when you shift the frame side to side manually. The barrel seems to be fitted nicely with no blemishes. It is exactly what I was hoping to find. I can't wait to shoot this puppy! I think it will be a success, but I can't jinx myself here. Wish me luck!