Gun Report

STI Duty One 9mm

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The Duty One fired even the hottest 9mm rounds with little felt recoil. The accessory rail should be a plus for civilian or professional.

STI Duty One 9mm

Gun Details

Model Name
Model Number
Home Defense
Law Enforcement
Concealed Carry
Caliber Plus Cartridge
Weight Unloaded
Overall Length
Barrel Length
Sight Radius
Overall Height
Front Strap Height
Back Strap Height
Maximum Width
Grip Thickness Max
Grip Circumference Max
Frame Material
Barrel Material
Grip Material
Trigger Pull Single
Trigger Span Single

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The ejector on our STI Duty One, left, was much longer than those found on either the Kimber, right, or Springfield Armory pistol, center.
After suffering malfunctions, we returned our Duty One to STI for warranty service.
The STI Recoil Master is a multi-spring, plunger-style recoil system that reminded us of a shock absorber found in a racing car. The accessory rail was one feature that adds to its value as a tactical weapon.
The horizontal lines machined into the Heinie brand sights were very effective in absorbing glare. The sight picture was excellent.

Read Gun Tests Rating and Recommendation