3.5" barrell.  Never fired, decided to go another direction. After market Night Fision Tritium HD standard height sights;  nightfision.com/product/night-fision-perfect-dot-tritium-night-sights-for-cz-usa-new   and Apex Enhanced Slide Lock / Release;  apextactical.com/extended-slide-release-for-cz-p-11  both installed by local professional gun smith. Comes with four 12 round factory magazines and 2 additional back strap sizes. Also included are 4 new in package Henning H600-P10 CZ P-10 Magazine extenders, not installed. If installed, these extenders will give room for one additional round and a full 3 finger grip with the P-10 S.  No shipping and buyer must pay transfer fee at a local FFL dealer in addition to pistol price.  Cash sale only.