Sphinx trigger release spring, assembly pin and our Competition Reduced firing pin spring (black) For use with the purple spring if having light primer strikes- DO NOT DRY FIRE WITHOUT SNAP CAP.
Add this on to our basic kit for the sdp compact and subcompact series kits which did not include these springs.
Further drop in DA and SA trigger pull when added to our kits.
Also eliminates harder primer light strikes on the 8lb spring from the sdp compact kits and insures positive ignition with every defense round we have tested on the sub compact kits.
**Installation of this spring is difficult and is recommended be done by a gunsmith due to the return spring.
Please note- DISCLAIMER: “Sphinx” may be a federally registered trademark of Kriss USA, Inc. Neither Modern Weapon Systems (MWS) nor this website are affiliated in any manner with, or otherwise endorsed by, Kriss USA, Inc. The use of “Sphinx” "SDP" "SUBCOMPACT" "COMPACT" "ALPHA" "DUTY" on this page is merely to advertise the sale of Sphinx pistol aftermarket parts, or accessories, manufactured by Modern Weapon Systems