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 STI International ambidextrous thumb safeties and STI International 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 STI International ramped bull barrel. The Duty One comes standard with a STI RecoilMaster guide rod system, commander style hammer and patented STI International trigger system.
Available in
| SPECIFICATIONS | |
| MSRP | $1299.00 |
| Caliber | |
| Frame | STI 1911 Frame with Integral Tactical Rail, 30 LPI Front Strap Checkering, Undercut Trigger Guard |
| Grips | Diagonal G10 Mycarta Grip Panels |
| Slide | 5.0" Flat Top With STI Front and Rear Cocking Serrations |
| Trigger | STI Long Curved |
| Barrel | STI Bull barrel, 5.0" Ramped, Fully Supported |
| Safeties | STI High-Ride Beavertail Grip Safety, Ambidextrous Thumb Safeties |
| Guide Rod | STI RecoilMaster |
| Sights | STI Ramped Front, Heinie Fixed Rear |
| Overall Length | 8.5" |
| Weight | 37.2 oz. |
| Finish | Blued Matte Finish |
| Competition Approvals | Pending |
| OPTIONS | |
| STI Fixed, Tritium Sights (2 Dot) | $65.00 |
| READ ABOUT THE | |
| USA / English Language | American Handgunner Jan./Feb. 2006 |
| Web / Blog | N/A |
| Europe | N/A |
| Asia / Pacific | N/A |
| VIDEO REVIEWS | |
| USA / English Language | N/A |
| Europe | N/A |
| Asia / Pacific | N/A |
| RESOURCES FOR THE | |
| Manuals and Tech Documents | 1911 Safety Reference and Owner's Manual (947KB) |
| Technical and Support Videos | RecoilMaster Take Down, Bull Barrel Guns |
| Holsters | Find a Holster for your STI |
| FFLs | Find an FFL Near You |
| IPSC Load Data | Jeff Maass' IPSC Resources Page |

