STI New STI Tactical 4.0″ Available Posted on September 19, 2018 by Robert Nagel 19 Sep STI up in the Austin area has introduced a new Tactical Model 4.15″ Pistol. This new model has a full dust cover rail and Nite Sights. It also sports a Magazine Well and is chambered in 9mm. Supplied with (1)-16Rd Magazine. Video From Texas Law Shield: Traveling with Firearms Can a LTC Holder Carry their Sidearm in a Holster in the seat next to you in your Car?