FN 66101013: The 502 MRD is designed for maximum fun but don\'t let great range days mislead you this red-dot-ready rimfire is built with enduring accuracy and quality in mind patterned after its big brother the FN 509. The target-grade fire control delivers faster more accurate shots from an optics-ready platform. Mounting a favorite red dot and cycling a wide range of .22 LR ammo makes a low-cost range day a high-end experience. Superior ergonomics and ambidextrous controls make it perfect for high round count training sessions. - Specs - Caliber: .22 LR - Operation: Single Action Only (SAO) - Mag Capacity: 10 Rd. - Weight: 22.5 oz. - Barrel Length: 4 - Overall Length: 7 - Twist Rate: 1:16 RH - Height: 5.4 - Width: 1.4 - Trigger Pull: 5 lbs - Sight Radius: 5.5 - Primary Features - Slide-mounted optics-ready .22 LR pistol - Single-action hammer - Fits most FN 509 holsters - Barrel - 4 barrel target crowned muzzle - Slide - Aircraft-grade anodized aluminum and steel - Loaded chamber indicator - Front and rear cocking serrations for easy manipulation - Magazine - Two 10-rd magazines included - Frame - FN 50-inspired ergonomics and grip texturing - Best-in-class trigger breaks cleanly at 5 lbs. - Operating Controls - Ambidextrous controls - Manual safety no de-cocker