Thread: Hammer Spring 10/22 or Brno 581

Going by the manuals/diagrams, they do look kind of similar, the Brno spring does appear to be slightly lighter if the drawings are accurate

http://stevespages.com/pdf/cz511.pdf

http://stevespages.com/ipb-ruger-1022.html

Mine is occasionally fussy to feed with the bigger mag and certain ammo types (555 bulk junk), but have never had many misfires. Is there much in the way of firing pin wear on the edge of the chamber?