Author Topic: Sphinx SDP - Even better than I'd heard  (Read 998 times)

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Offline farruggio

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Sphinx SDP - Even better than I'd heard
« on: March 08, 2018, 07:34:46 PM »
Just took my brand new SDP Compact to the range for the first time. 220 flawless rounds (124gr FMJ x 150, 115gr FMJ x 50, Hornady Critical Duty HP x 20).

The only disappointment is a DA trigger just slightly heavier than Rosie O'Donnell. I know zrtactical.com has a hammer spring / firing pin spring kit that purportedly reduces DA weight by 3-3.5 lbs. Wouldn't mess with what feels like a perfect SA trigger, but wondering what others have done to address the raw tonnage of this first draw shot.

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Offline ROCKY150

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Re: Sphinx SDP - Even better than I'd heard
« Reply #1 on: March 08, 2018, 09:32:03 PM »
Make the spring change....I have done it to both of my SAR's.   The SA goes from good to excellent while the DA goes from Rosie to very very acceptable.  If you don't like it change it back.

RRR

Offline aaangel

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Re: Sphinx SDP - Even better than I'd heard
« Reply #2 on: May 06, 2018, 04:38:00 AM »
Great gun ! I tried to put the zrtactical firing pin spring on but to no avail! My rollpin would not budge. Off to a gunsmith. Also i would love to see a replacement grip that has a little more bite. It can get slippery during my texas summer.

Offline dohc97

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Re: Sphinx SDP - Even better than I'd heard
« Reply #3 on: November 16, 2018, 01:08:57 PM »
Anybody has used just the hammer spring from the kit?

Offline Mick-S

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Re: Sphinx SDP - Even better than I'd heard
« Reply #4 on: November 17, 2018, 08:25:51 PM »
I put the whole kit in mine. I don't regret it at all. I wound up using the middle hammer spring. I tried the lightest one but got a couple light primer strikes in 2 boxes of blazer brass 124gr ammo.
 

Offline twowheels

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Re: Sphinx SDP - Even better than I'd heard
« Reply #5 on: January 07, 2019, 01:39:09 PM »
The spring kit transforms the DA pull.

Offline Bapple

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Re: Sphinx SDP - Even better than I'd heard
« Reply #6 on: January 07, 2019, 03:58:28 PM »
I used just the hammer spring in both of my SDP's.  Dropped the DA significantly, and the SA pretty much stayed the same, maybe just a tad lighter, but almost non-noticeable.  You will not regret changing it.  Makes the SDP even better than already is.

Offline twowheels

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Re: Sphinx SDP - Even better than I'd heard
« Reply #7 on: January 11, 2019, 12:03:45 AM »
I put the hammer spring and the fp spring in my subcompact.  It was an excellent change.