AK47-AK74 Retainer Pin Front Sight & Gas Block to Barrel
Retainer Pin Front Sight & Gas Chamber to Barrel 3mm pin for pinning AK gas blocks and front sights to the barrel.  These are actually over 3mm as are the originals so a 3mm drill bit can be used to drill the hole. Made in the USA from 4140 steel then heat treated and black oxided.