STI - Tactical 4.0



STI International’s patented 2011® technology gives the STI Tactical 4.0 more fire power advantage than 1911 tactical pistols without greatly increasing the size of the grip. Combining this advantage with less felt recoil and other popular 2011 features, the STI Tactical is a superior pistol for all close quarters applications. Introduced in 2012, the STI Tactical 4.0 fulfills an important part of the ‘STI Tactical Family’ line of pistols.

Building on the popularity of the 5.0 version, the STI Tactical 4.0 delivers the same high capacity, accuracy, and dependability in a more compact package. The STI Tactical 4.0 is well suited for multiple applications, ranging from police and SWAT teams requiring a firearm with a light rail and high capacity, to the individual demanding a high performance pistol with special features for personal protection. The tactical rail milled into the dust cover of the frame accepts all industry standard light mounts.

The STI Tactical 4.0 ships with one 126mm Magazine.


Calibers 9×19, .40S&W, .45ACP
Frame STI Modular Steel 2011® with Integral Tactical Rail
Grips STI 2011® Glass Filled Polymer Modular (Black)
Slide Classic 4140 Carbon Steel Slide
Slide Features Unique with Front & Rear Cocking Serrations, Flat Top
Trigger STI Long Curve
Barrel 4.26” (10.82cm) STI Bull Barrel, Ramped, Fully Supported
Hammer STI Square style
Safeties STI Blue High Rise Beavertail Grip Safety Ambi Thumb Safeties
Guide Rod STI Recoil Master
Sights STI Ramped Front STI Ledge style Rear
Overall Length 7.65” (19.43cm)
Weight 33.9 oz (961.04g)
Finish Blued (Matte)