In a tac course I ran a year ago with my Makarov. Several people who shot the Mak at some point all commented upon the tighter groups they shot with it, I think this is in part due to the fixed barrel and the smaller sights, the smaller sights creating a tighter grouping in aimed fire.
One other thing I noticed with my Mak, is the almost impossiblity of dumping a magazine accidently. Three competitors with other pistols accidently dumped their magazine with their offhand thumb (it looked like). Twice it happened while transitioning the gun in strong to weak hand shooting drills around weak side obsticles. So the mag release is a tradeoff I think in some ways.
Nice writeup .