METAL INSERT FOR HK21 BUTTPAD
HK21E OUTER BUFFER COMPRESSION SPRING NEW, GERMAN
HK21E BUFFER COMPRESSION SPRING SET NEW, INNER & OUTER...
HK21E HK23E HELICAL PLATE BUFFER SPRING NEW, GERMAN
HK21E HK23E BUFFER PISTON NEW, GERMAN
HK21E HK23E BUFFER SLEEVE FOR COMPLETE BACKPLATE, GERMA...
HK21E HK23E UNFINISHED BUFFER SLEEVE FOR BACKPLATE, GER...
HK21E HK23E BUFFER CAP FOR BACKPLATE/BUFFER ASSEMBLY