DIAMONDBACK DBX 5.7 X28MM PROMAG 20RD MAGAZINE FOR FN The DBX 5.7A-28mm 20-Round Magazine by ProMag is a reliable aftermarket magazine designed for firearms that accept FN-pattern 5.7 magazines. Constructed from durable polymer and engineered for consistent feeding, this magazine offers a practical alternative to factory magazines while maintaining standard capacity and fitment. Well-suited for range use and general shooting applications, the DBX57-MAGFN delivers dependable performance in platforms chambered in 5.7A-28mm that utilize FN-style magazine geometry. FEATURES Detachable magazine for FN-pattern 5.7 firearms Cha Mfg: Diamondback