MODERN WEAPON SYSTEMS - SPHINX ENHANCED TRIGGER KIT - SDP Compact, Compact Duty and Compact Alpha

Was: $99.99
Now: $79.99
(2 reviews) Write a Review
SKU:
SDP-CP-TK

After several requests for a better trigger in the Sphinx SDP Compact pistols from customers. We finally took action and created a kit that not only makes the Sphinx SDP Compact a better combat pistol but now a contender for competition shooting. Unlike other kits on the market which have poorly made springs that do not retain safe operation of the firing pin during a drop incident. Our kit not only redesigns the the springs inside the Sphinx but also the firing pin to allow for a extreme reduction of the hammer spring by over half the original weight, without compromising safety of the pistol. We have also redesigned the way the hammer spring compresses and Incorporated a unique staging of the trigger to reduce trigger weight during the start of the pull, insuring you do not jerk the sight picture in double action. We recommend you test your ammo with all springs starting with the yellow spring, testing has shown the 8lb spring can have a fail to fire with the very hardest primers at times. Trigger pull at an incredible 4lb 10oz in SA and 7lb 13oz in DA possible with our kit, finally making it competition ready for fast accurate shots on target.

  **DO NOT DRY FIRE WITHOUT SNAP CAP**
 
Kit includes:
Extended firing pin (properly hardened)
Reduced firing pin spring
Reduced Hammer spring 10lb (Yellow) 
Reduced Hammer spring 9lb (Green)
Reduced Hammer spring 8lb (Purple) *competition only
 
 

Ammo's tested and verified working:

Federal American eagle ball 115gr and 147gr
Tula (had issues with purple spring and some green)
Winchester
S&B
Rem UMC
Magtech
Sig V Crown
Hornady Crit Def and Duty
 
**DOES NOT WORK WITH FREEDOM MUNITIONS AMMUNITION**
 
 
**We are not liable for any use in ccw application.
 
***We recommend all trigger kits be installed by a gunsmith.
 
For installation of this kit we have created a video to assist you here -> www.youtube.com/watch?v=DfDNJBZxkfE
 
No shipping outside of the USA due to ITAR
 
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. 

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  • 5
    Perfecta ammo

    Posted by Steve Reeder on Aug 6th 2018

    Trigger kit definitely helps with pull weights. Tried all sorts of combinations with springs but even with the heaviest main spring and lightest fp spring, I still got a single light strike in about 75 rounds using Perfecta 115grain. Will try different ammo and overall I like the kit since I only use this gun for plinking.

  • 5
    Outstanding

    Posted by Rob on Jan 2nd 2018

    If you own Sphinx, you owe it to yourself to try this product. It's like a custom trigger gun and makes a great gun OUTSTANDING. Thanks!!!