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Arc Systeme have redesigned their 304 P thumb release for 2018 with some key enhancements. New trigger support. New form of trigger. Reinforced spring mechanism. Improved shell, trigger support and knob. Together these changes promote optimal alignment, easy thumb access to the trigger, optimum pressure on the index and middle finger for the benefit of a more natural shooting line. Three sizes of thumb trigger are included. The 304 P (2018) is available in four sizes, XS, Small, Medium and Large.
New trigger support:
New form of trigger:
Reinforced mechanism (springs):
Shell, trigger support and knob:
The previous version could in some cases cause tension on the ring finger, the triggers provided were not enough to find a strong and ergonomic contact with the thumb. This new version allows a logical encounter between the trigger and the thumb, which makes the overall mechanism much more regular. The new larger 13mm trigger is also mounted directly on the mechanism of relaxing tail by removing the added support.
A: Sensitivity adjustment - screw to harden the trigger.
B: Adjusting the stroke - screw to decrease the stroke.
Note: It is important to set the adjustment to the minimum to optimize the operation of the release.