This wrench is 1.27mm, 0.050", and is the correct size to adjust the trigger position on your K-80 or K-20. The same wrench locks and unlocks the barrel selector. Please note: When adjusting the trigger position you must also loosen the front selector locking screw in the trigger blade. This is because when the selector is locked the trigger cannot move along the rail.

Other Krieghoff Wrenches Available:
- Stock Removal Wrench (5mm Hex)
- Comb Adjustment Wrench (2.5mm Hex)
- Trap Special/Pro Rib Wheel Locking Wrench (1.5mm Hex)
- Safety Catch Locking Wrench (2mm Hex)

Krieghoff Know How - Safety, Selector & Trigger Adjustment watch this video