Worc said:
The Sphinx is somewhat of a cross between the CZ 75 and CZ P-07.
I guess the reason I disagreed with your original comment, cited above, about the Sphix being a "cross" between the 75 and P-07, above, was that the "cross" you see is only skin deep. Not much P-07 in the Sphinx SDP.
Internally, almost nothing is similar. The frames, while looking similar are made quite differently (P-07 is one-piece polymer; Sphinx SDP two-piece:steel/steel, alloy/alloy, or alloy/poly -- but, notably, no poly/poly combo), have different barrel lug designs, different decocker/sear mechanisms, have different trigger bar designs (one-sided in the P-07, two sided in the SDP), and the P-07 mags won't work in the CZ-75B compacts (or the Sphinx), while the Sphinx mags will. The P-07 grip inserts are done differently, too, and don't allow the wider grip possible with the SDP -- just a longer one. I suspect these guns won't share the same holsters, as the P-07 seems to be thinner. Both guns apparently feel good in the hand, so they do have THAT in common. (I've only shot the SDP; I haven't been able to get hands on a P-07, yet.)
You often hear it said on this and other forums, that the CZ-75 is an improved Browning Hi-Power -- primarily. it seems, because they look a bit alike. But a quick exam shows those two guns share almost no common traits (except variants of the Browning short-recoil locked breech design, also found in the vast majority of modern centerfire semi-autos) beyond a basic "look."
The Sphinx
does look a bit like the P-07, and both have the highly-regarded CZ ergonomics, but I can't find much else that the Sphinx SDP shares with the P-07 design -- but a LOT shared with the 75 (and 75B), hence my original response. The SDP is an "improved" 75B.
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