FN 66102317 502 MRD | .22 LR 4in | 10+1 Optic Ready

The FN 502 MRD is a compact, optics-ready .22 LR pistol patterned after the FN 509 platform and built for reliable, low-cost range use. It features a 4-inch target-crowned barrel, an optics-cut slide, and FN 509-inspired ergonomics with ambidextrous controls. For an optic that pairs well with this platform while remaining under $1,000, consider a Holosun 507C red-dot for a clear sight picture and durable mounting footprint.

Typical applications include range training and precision rimfire target shooting where low-cost ammunition and high-round-count sessions are priorities.

Product Specifications

• The caliber is .22 LR.
• The operation is Single Action Only (SAO).
• The magazine capacity is 10 rounds.
• The barrel measures 4 inches with a target-crowned muzzle.
• The overall length is 7 inches.
• The twist rate is 1:16 RH.
• The trigger pull breaks at 5 lbs.
• The sight radius is 5.5 inches.
• The slide is constructed of aircraft-grade anodized aluminum and steel and is optics-ready.
• The pistol includes two 10-round magazines in CA-compliant configuration.
• The frame features FN 509-inspired ergonomics with a Picatinny rail for accessories.
• Controls are ambidextrous and the pistol includes a manual safety and a CA-compliant magazine disconnect.
• The firearm accepts a slide-mounted optic and has front and rear cocking serrations for manipulation.
• The height is 5.4 inches and the width is 1.4 inches.
• The UPC is 845737019327.

This FN 502 MRD delivers a handgun-sized rimfire experience with ergonomics and controls familiar to FN 509 owners. The optics-ready slide and target-crowned barrel make it well-suited for low-cost, high-volume training and precise rimfire target work. Its inclusion of two 10-round magazines and ambidextrous controls make it practical for sustained range sessions.