IFF FK Brno PSD Caliber Conversion 7.5 FK to 9mm Luger 17rd Magazines(2) Recoil Spring

The IFF FK Brno PSD Caliber Conversion 7.5 FK to 9mm Luger Kit with 17-round magazines and recoil spring transforms your existing 7.5 FK platform into a 9mm Luger-capable firearm. This conversion kit from Italian Firearms Group provides shooters with caliber flexibility without requiring a completely separate platform, making it an efficient solution for operators and enthusiasts who need multi-caliber capability from a single lower receiver or frame assembly.

The kit includes two 17-round 9mm magazines and a matched recoil spring system engineered for the 9mm cartridge. Each component is precision-manufactured to ensure reliable feed, extraction, and cycling across the spectrum of commercially available 9mm ammunition. The design optimizes terminal performance from the 9mm while maintaining practical ergonomics.

This conversion system is purpose-built for shooters who need to transition between 7.5 FK and 9mm Luger on the same platform—a practical requirement for training facilities, law enforcement agencies managing multiple duty configurations, or civilian operators seeking ammunition availability and cost efficiency. The 9mm Luger cartridge offers lower recoil impulse than its parent caliber, making it suitable for marksmanship refinement and follow-up shots.