DPM Systems Technologies inc was founded in 2003 having as its primary objective the design and development of advanced components. More specifically the aim of the company is: The research and development of technological products with an improvement of operation of all portable defensive weaponry. This system works due to the multi spring intricate rod and controls the functionality of the pistol. The system includes one washer and two different external springs. The washer should Always be Installed when the DPM Recoil Rod and springs are used. The external springs are different in length, 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 his/her personal standards. OVERALL ADVANTAGES Faster follow up shots Improved firing speed Slide and Frame Protection Elimination of jams Significant recoil reduction Better double-tap concentration Better control and greater accuracy