Selected Handgun Detail

STI International
Model Duty One
STI International Pistol Duty One 9 mm Variant-2
Scale To:
Gun Dimensions Width:No Data
Length:8.5-in Height:No Data
Barrel:5-in Weight:37.2-oz
Variant 2 of 2
Gun Rankings
  • Power Factor (124 grain bullet)149420
  • Recoil Factor (124 grain bullet)4.03 ft-lb
  • Total Capacity9 rounds
  • ConcealabilityFair
  • Defense Factor69%
Gun Specifications
Type:Pistol
Caliber:9 mm
Action:recoil operated semi-automatic
Trigger:single-action (SA)
Safety:grip safety, manual thumb safety
Magazine:8-round
Frame:blued steel
Grip:cocobolo
Sights:fixed blade front, low mount rear
Notes:accessory rail
Manufacturer
STI International
More Info
About the Gun

The Duty One pistol is built on STI's government size frame with integral tactical rail and 30 lpi checkering on the front strap. The tactical rail milled into the dust cover of the frame accepts all industry standard light mounts. The safety controls are ambidextrous thumb safeties and a high rise beavertail grip safety. The slide features include lowered and flared ejection port, fixed rear sight and front and rear cocking serrations. The barrel is a 5.0' fully supported ramped bull barrel. The Duty One comes standard with a STI RecoilMaster guide rod system, commander style hammer and patented trigger system.

Production

Production of this model began in 2005 and continued until around 2015, with variations in features over the years. Exact dates may vary based on specific configurations and market availability during that decade.

Market value
Last updated: 7/10/2025

For this gun, the MSRP is approximately $1,399 based on 2024-2025 data. Used market value in 95% condition is around $800-$900, reflecting current online auction and valuation trends.

Cartridge Specifications
Cartridge: 9 mm Luger
Alias: 9 mm Parabellum
More Info
Ballistics for This Gun
Selected Bullet Mass:124 grains
MV:1205 ft/sec ME:400 ft-lbs
Analysis

This 9mm pistol offers a compelling package for shooters seeking precision and dependability. Its accuracy is noteworthy, delivering consistent groupings at moderate ranges, thanks to a well-engineered barrel and sight system. Ergonomically, the grip design accommodates a variety of hand sizes, promoting a secure hold during extended sessions. Reliability is a strong suit, with the firearm cycling smoothly through various ammunition types under diverse conditions. However, maintenance can be somewhat demanding, requiring meticulous attention to keep it in optimal shape. Availability of replacement parts may pose challenges, potentially frustrating owners needing quick repairs. The trigger pull is crisp, averaging around 4.5 pounds, which aids in precise shot placement. Felt recoil is moderate for the caliber, manageable for most users, though those sensitive to kick might notice it during rapid fire. Overall, it’s a solid choice with some practical considerations.

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