SMITH & WESSON Sigma Series SW9E SW40 SW357DPM Mechanical Recoil Reduction System for Smith & Wesson Sigma Series This system works due to the multi spring intricate rod (3 springs) and controls the functionality of the gun. The third spring, which is contained within the rod, controls the movement of the slide so it never rams on the frame. Included with the system are 2 separate springs so the user can fine tune the weapon for his her personal standards. The longer spring (more coils) is

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the long spring is heavy and the short is light so the shooter can fine-tune the pistol on the opening and locking positions (slide on the battery) according to his/her personal standards

This DPM Mechanical  Recoil System functions due to the multi spring intricate rod (3 springs)

This allows the moving parts of the pistol to be protected

The body is constructed from cardboard which is a strong

This Mechanical Recoil Reduction System works due to the multi-spring intricate rod and controls the functionality of the pistol

Significant recoil reduction

so as to offer a very elastic effect of the slide travel and the same time the exchangeable external springs of the system provide an additional force that stops the violent rams on the frame

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