There is a new single stack on the market, the CZ P-10M. While it is cool, there is only one problem; you can't have one no matter how much you want it.
CZ Adds Micro-Compact 9mm to Its P-10 Pistol Series - Handguns
CZ P10m First Shots Review
Sunsmith Holster - Compatible with CZ P-10 C Kydex IWB Inside Waistband Concealed Carry Holster Made in USA by Fast Draw USA (Black - Right Hand) : Sports & Outdoors
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TFB Review: The Slick-Sided CZ P10 M Micro Compact Pistol -The Firearm Blog
CZ P10m First Shots Review
New Products: Issue 48
CZ P10 M controllable compact
The CZ P-10M: CZ's New Micro 9mm, Reviewed
CZ P-10 C Compact Striker-Fired 9mm Combat/Tactical Pistol for Concealed Carry (CCW): Superior to the Glock 17 (G17) and Glock 19 (G19) Pistols? – (DR): An online tactical technology and military
New CZ P-10M Single Stack 9mm & You Can't Have It
CZ P-10 M Striker-Fired 9mm Compact Pistol: Full Review - Shooting Times