A K-Mag (manufactured by H.K. Precision in South Africa) magazine in .38 Super designed for STI platforms is built to fit STI, SVI (Infinity), and BUL Armory 2011/double-stack 1911-style pistols chambered in .38 Super (and often cross-compatible with 9mm Luger depending on the specific tube and follower setup).

Key Compatibility Details:

• Firearm Platform: Double-stack 2011-style frames (such as classic STI, SVI, and compatible double-stack frames).
• Caliber: .38 Super (frequently used interchangeably or with minor follower/spacer adjustments for 9mm).
• Length Variations: K-Mag / STI-pattern double-stack magazines standard length 126mm / Flush-fit (designed for duty, compact grips, or restricted capacity 10-round laws).