Banner
Home Technical Support Adjusting the trigger of SPNew, SPNew RF, HPNew (Mechanical Trigger)
2014 . 07 . 23
Adjusting the trigger of SPNew, SPNew RF, HPNew (Mechanical Trigger) PDF Print E-mail

Adjusting the trigger of SPNew, SPNew RF, HPNew (Mechanical Trigger)

ALL ADJUSTMENTS SHOULD BE DONE HOLDING THE PISTOL UPSIDE DOWN. NEVER TURN ANY SCREW MORE THAN ¼ TURN AT A TIME. USE CAUTION WHEN ADJUSTING THE TRIGGER.

SCREWS RG: Unscrew any of the three screws to adjust trigger position.

SCREW CS: Turn clockwise to lengthen the second stage travel and counter clockwise to shorten until it disappear (single stage trigger).

SCREW PS: Inside screw CS. Turn clockwise to increase second stage weight and vice versa.

SCREW PG: This regulates the disconnector engagement on the sear. Turn clockwise to reduce the freeplay before the first stage trigger.

SCREW PP: Give a wide range of adjustment in the first stage weight. Turning clock wise increases the weight to over 1360 grams and vice versa reduces the weight to less than 1000 grams.

SCREW TS: This function as an adjustable trigger stop. Turn clockwise to reduce over travel.

SCREW CP: Turn clockwise to reduce first stage travel. Turning clockwise will reduce the sear engagement. CAUTION: if this screw is adjusted too far clockwise the sear will not re-engage. Once the desired adjustment is achieved. ALWAYS re-adjust screw PG, to ensure that the disconnector is correctly adjusted on the sear.

CAUTION: If the screws TS and CP are adjusted too far clockwise, the trigger will not function.

To adjust the trigger, you should hold the pistol upside down. Pardini offers a convenient side opening on the frame, where you can see the lever and the screws - where they go and what they do. Remember to turn each screw no more than ¼ turn at a time. Prepare to spend some time on it, don’t start it if in rush, but it’s worth it, you will have a personalized trigger. Pardini trigger offers fine, all dimensions adjustment - you can have the trigger you wish, while you can see what you are doing through the side openings.

SCREW RG: Unscrew to adjust trigger position. There are 3 RG screws on the trigger set. RG2 is on top of the trigger and controls the movement of the trigger in forward-backward direction along the trigger rod. In case you reach the limit of the rod forward and it is not enough; you will need to unscrew RG1, which attach the trigger rod to the disconnector, remove the trigger set, unscrew RG2 and attach the trigger backwards. Than attach the trigger set to the back position you will see on the platform of the disconnector. RG3 is on the bottom of the trigger and it lets you twist the trigger left-right.

To adjust the trigger back stop, use screw TS. This adjusts how far back the trigger travels after the shot (over travel). Turn clockwise 1/8 turn at a time and produce a shot. Do this until the pistol can’t shoot any more. Turn 1/8 counterclockwise at a time until you have a shot. Then adjust to your preference. Do not make it too short, it can touch the trigger stop before the shot, making the trigger heavier and unpredictable.

To adjust the sear engagement, use screw CP. It adjusts how much the sear is engaging on the hammer. Turn clockwise 1/8 at a time, press the trigger and pull the bolt. After that release the trigger slowly, until it engage. Do this until the desired reengagement. Making it too short is unsafe – the gun eventually will do automatic fire.

Use screw CS to position the trigger weight. When looking from through the side window, the tip of the screw must be close (two stages trigger) or not touch the lever (one stage). Most shooters prefer to have a distinctive second stage If adjusting it with second stage, the lever should be close to the tip of the screw CS and  when squeezing the trigger it will touch and press on it. When the trigger is squeezed and stopped by screw TS (the trigger stop), the lever should have some gap to the screw itself. You want the lever to press on the head only and not on the screw. If trying to adjust the trigger from the beginning, it’s maybe a good idea to turn screw CS counterclockwise until the head is not touching the lever. Now you have it out of the way until adjusting the trigger travel dimensions. After you’re done with it, turn screw CS clockwise until you get two-stage trigger. At this point follow the instructions for the trigger weight (or second stage if two-stage trigger.

Use screw PS to adjust the trigger weight. At this point you have adjusted the length and the stages (one or two). Turning screw PS clockwise will increase the second stage trigger weight and vice versa. Use small turns and measure the weight.

If a two-stage trigger is preferred and you have it adjusted already, you can adjust the first stage weight with Screw PP. It is located inside an opening on the frame next to the rear sight. Turn it clockwise to increase the first stage weight and counterclockwise to decrease it.