Two clicks per scoring ring @ 10m.
Turn screw A 176-1 - anticlockwise to increase. Should the trigger fail to engage while the pistol is being cocked, turn A 176-1 anticlockwise.
Note: Loosen lock nut A 177-2 to adjust.
Turn screw A 177 clockwise to shorten, anticlockwise to lengthen.
This is an option not supplied with all guns.
The cap can be set to release left over gas when pressure drops. It can be regulated thus:
Loosen the knurled lock nut (3). Then set the regulating nut (4). Turning it anticlockwise will provide for late release, clockwise an early release of gas. Then retighten lock nut 3.
This cap will not work if the temperature of the gun or room is below 5 degrees C (41F).