In their default configuration, inserting and removing the magazine for reassembly is a pain. I removed the magazine disconnect safety in mine and replaced it with a MKII bushing. Pretty much made it a MKII with a filled LCI port. Also, the magazine inserts easier without the disconnect safety I think. You can't go wrong with a Ruger Mark.
NRA & USCCA Member
Certified Glock Armorer 2011-2014
Red Hat Certified Engineer