Selected Handgun Detail

STI International
Model Duty One
STI International Pistol Duty One .40 S&W Variant-1
Scale To:
Gun Dimensions Width:No Data
Length:8.5-in Height:No Data
Barrel:5-in Weight:38-oz
Variant 1 of 2
Gun Rankings
  • Power Factor (180 grain bullet)189180
  • Recoil Factor (180 grain bullet)6.45 ft-lb
  • Total Capacity9 rounds
  • ConcealabilityFair
  • Defense Factor78%
Gun Specifications
Type:Pistol
Caliber:.40 S&W
Action:recoil operated semi-automatic
Trigger:single-action (SA)
Safety:grip safety, manual thumb safety
Magazine:8-round
Frame:matte finish steel
Grip:checkered rosewood
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 firearm began in 2005 and continued until around 2015. Specific manufacturing dates may vary based on serial numbers, and owners are encouraged to contact the manufacturer for precise information regarding their individual piece.

Market value
Last updated: 7/10/2025

For this gun, the MSRP is approximately $1,400 based on recent data. Used market value in 95% condition is around $900-$1,100, reflecting 2024-2025 pricing trends from available firearm marketplaces.

Cartridge Specifications
Cartridge: .40 Smith & Wesson
Alias: N/A
More Info
Ballistics for This Gun
Selected Bullet Mass:180 grains
MV:1051 ft/sec ME:442 ft-lbs
Analysis

This .40 S&W pistol offers a compelling package for shooters seeking a high-performance duty or competition firearm. Its accuracy is noteworthy, delivering tight groupings at typical engagement distances, thanks to a well-engineered barrel and slide fit. Ergonomically, the grip design accommodates a wide range of hand sizes, providing a secure hold under rapid fire. Reliability is a strong point, with consistent feeding and ejection during extended testing, even with varied ammunition types. The trigger pull is crisp, averaging around 4.5 pounds, which aids in precise shot placement. However, felt recoil is somewhat sharp due to the potent caliber and lighter frame, potentially fatiguing for newer shooters. On the downside, maintenance can be intricate, requiring attention to detail for proper care. Additionally, sourcing replacement parts may pose challenges, as availability is limited compared to more common platforms, potentially frustrating some users.

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