Bolt has been shaped-n-polished and has aftermarket puck -n- gas plug.
Runs!
MD20s can be dumped in 5-6 seconds with all rounds into a human silhouette at 25 yards.
She eats just about anything but the lightest target loads, e.g. Wally World's Winchester Universal bulk, she don't like the wimpy loads.
Rio, Nobel, Estate, Winchester SuperX, Centurion, Federal bulk and etc, 7.5 shot, #4 buck, 00 buck & slug, she handles it all.
Some run all but the lightest right outta'da box... Some will only run good high brass.
A little tuning and a good break in does wonders.
Rather than get disappointed/frustrated with their new & fussy gun.
People just really need to realize that these are designed to run high brass 00 buck & slugs for the Russian military.