This Krebs Custom Safety Selector Lever is precision stamped from 1mm 1050 steel and heat treated to 50C Rockwell, these are one-piece units and are 100% US made! Designed to work in all "standard-pattern" stamped-receiver AK rifles. Will NOT fit Polish Tantal or Yugo rifles. NotesWill not fit Yugoslavian-pattern rifles or pistolsInstallation of this safety in a Vepr 12 shotgun should be done by a qualified gunsmith. Will not work on Century rifle's without minor gunsmithingThese safeties will not work with CMC or Elftmann "modular" trigger "packs". These "packs" require a "full auto" safety for proper operation.