Often asked thread and wrench sizes for the K-80.
Front sight thread is 2.5mm
Mid sight thread is 2.5mm
Bead thread on older guns was 2.6mm
Trigger adjusting wrench is 1.27mm / 0.050″. Same wrench locks the barrel selector.
Trigger guard screw slot needs a flat blade 7mm wide x 0.5mm thickness.
Comb adjusting wrench is 2.5mm hex key
Stock removal wrench is 5mm hex key
Safety catch locking screw wrench is 2mm hex key
Forearm screws need a Torx 20 wrench
Height adjusting wheel on Trap Special and Pro Sporter is locked using a 1.5mm hex wrench.
Front hanger cross-pin is 1.5mm. Use a 1.4mm punch to remove. The cross pin is hollow and a 0.9mm punch through the pin provides support when reinstalling.