The Tanfoglio Defiant Stock I pistol in 10mm Auto with a 4.5-inch barrel and 13+1 capacity (brand part no. TFSTOCKI10) is set up specifically for Practical Shooting Production Division as well as IDPA SSP and ESP classes, letting new shooters enter competitive sports while giving seasoned competitors a proven platform. Italian Firearms Group machines a traditionally rifled cylindrical barrel for consistent results across ammunition types, and the frame shares its design with the Stock III, including a full-length railed dust cover for better balance. The overall black steel finish, serrated slide, and wood grip complete a competition-ready package with a double/single-action trigger. Among competition-oriented semi-auto handguns, this Defiant Stock I configuration favors USPSA, IDPA, and practical shooting competitors.

Key Specifications

• The chambering is 10mm Auto.
• The capacity is 13+1 rounds.
• The barrel measures 4.5 inches, traditionally rifled for consistent accuracy.
• The frame includes a full-length railed dust cover for improved balance.
• The trigger action is double/single action.
• The sights are fixed and interchangeable.
• The grip is wood, over an overall black steel finish.
• The slide is serrated.
• The safety is Thumb.

Frequently Asked Questions

What competition divisions does this pistol suit? USPSA Production Division, plus IDPA SSP and ESP classes.

How does the Stock I compare to the Stock III? They share a similar frame design with a full-length railed dust cover, but the Stock I uses a steel frame rather than polymer.

Buy the Tanfoglio Defiant Stock I Pistol

A proven competition platform ready for Production Division and IDPA is exactly what this Defiant Stock I delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.