i had mine since early 2015 its the sdp duo-tone all steel, love the way it shoots SA and hate DA pulls. i carried it for a couple of days and it felt like two bricks strapped around my waist. so shes back in the safe and this year i pulled her out for night stand duties and strapped a surefire xc1 on her. i only shot the sphinx when i visit the range to test my home defense fire arms and that happens once or twice a year.
i almost forgot about my love for this pistol until a couple of months ago i stumbled upon a youtube video by modern weapons system. my excitement is back! the real reason for picking up the duotone compact was because i was hoping that the full size duotone will come out and i wanted to have them as a pair (compact for CCW and full size for uspsa production) . but as we all know that never happened
i had a lot of trouble taking apart the sphinx sdp since its the first time for me to pull out its guts and there are no videos in youtube for DIY on the frame. luckily for me there was Ian Mcfarland from modern weapons that helped me via emails when i get stuck during the take down of the pistol. i cant thank you enough Ian! i don't remember what my stock pull was but i built this pistol for CCW duties and im getting high 7lbs DA and high 3lbs SA using the hardest hammer spring. i cant say im not exited to shoot live fire and swap out the 3 hammer springs and test it with my cci primered loads and some factory WWB 115gr and freedom munitions 124gr. i will report on the hammer spring once i come back from the range. and, according to ian there are some more improvements coming soon for the sdp. oh yeah!
MODERN WEAPON SYSTEMS
SPHINX ENHANCED TRIGGER KIT W/ LIGHTWEIGHT TRIGGER RETURN SPRING - SDP Compact,