FN Five-seveN MKII Handgun Magazine Black 5.7x28mm 20/rd

The FN Five-seveN MKII Handgun Magazine Black 5.7x28mm 20/rd is purpose-built for operators and shooters who rely on FN's signature pistol platform. Designed to meet the exacting standards of law enforcement and military personnel, this 20-round magazine delivers the capacity and reliability demanded in high-stress environments. Whether you're conducting duty rotations, training for competition, or maintaining a mission-ready backup magazine, this component is engineered to function flawlessly when performance counts most.

Constructed from lightweight polymer materials, the Five-seveN MKII magazine combines durability with minimal weight penalty—critical for extended carry and tactical operations. The numbered witness holes provide at-a-glance round count verification without removing the magazine, a feature that accelerates load management under pressure. A removable impact-resistant polymer baseplate facilitates rapid disassembly for maintenance or cleaning, while the durable polymer follower ensures consistent feeding geometry throughout the magazine's service life. The high-tensile spring maintains tension across the full 20-round capacity, guaranteeing reliable feeding of 5.7x28mm ammunition from round one through the last round chambered.

This magazine pairs exclusively with the FN Five-seveN MKII platform, making it an essential accessory for pistol owners seeking to expand their magazine library or replace worn components. Professional shooters, duty officers, and civilian tacticians benefit from maintaining multiple magazines for faster range transitions and reduced downtime during training cycles. The Five-seveN MKII's 20-round capacity distinguishes it in a market where standard duty pistol magazines typically hold 15–17 rounds, providing a distinct advantage in extended engagements or scenarios where magazine changes are operationally limiting.