The Duty One 3.0


The Duty One has long been a great seller for STI but in 2013 they took the opportunity to incorporate Customer suggested changes into the model before expanding the line to include the 3” & 4” versions. The new Duty one line is a unique evolution; STI went out and redesigned their light railed guns to surpass the design and quality of any railed 1911 style on the market today. Changes include new ‘grid’ serrations and matching front strap which are as stylish as they are functional, abbreviated front cocking serrations, a redesigned tactical rail, smaller engravings, and new G10 mycarta grips. All 3 versions are built on forged steel, standard width frames with STI’s innovative new picitany rail system. Flat checkered mainspring housing with a matching ‘grid’ pattern provides an excellent hold and the controls are STI International’s singled sided thumb safety and STI International high-rise beavertail grip safety. The Duty One features include traditional 1911 styling with lowered and flared ejection port, STI Fixed Ledge Style rear sight and the STI ramped front for an easy sight picture. The barrel is a 3.24” bull barrel. The Duty One 3.0 comes standard with STI International commander style hammer and patented STI International trigger system.

The Duty One 3.0 ships with one Officers sized 1911 Magazine.


MSRP $1,384.00 (2014 pricing)
Calibers .45 ACP, .40 S&W, 9×19
Frame STI 1911 Officers Frame with Integral Tactical Rail, ‘Grid’ style Front Strap, Undercut Trigger Guard
Grips STI G10 Grip Panels
Slide Classic, Round Top with Front and Rear Grid Cocking Serrations
Trigger STI Long Curved Trigger
Barrel 3.24″ (8.22cm) STI Bull barrel, Ramped, Fully Supported
Safeties STI High-Ride Beavertail Grip Safety
Single Sided Thumb Safety (Blued)
Guide Rod Recoil Master
Sights STI Ramped Front
STI Ledge Style Rear
Overall Length 6.5” (16.51cm)
Weight 31.6 oz (895.8g)
Finish Blued Matte Finish
Competition Approvals Pending



Hard Chrome $300.00


Magazine Capacity
Caliber Rounds
9×19 8+1
.40 S&W 7+1
.45 ACP 6+1

*STI is dedicated to ‘Continuing the Evolution of the 1911′ and we periodically implement ‘rolling changes’ to our product specs. While we do try to keep the website and catalog photos as current as possible, there is often a lag between an improvement being implemented and being reflected on our marketing materials. For this reason, all entries are representative only and subject to change without notice.

Printed from:

Scan to visit this page: