The Ulfhednar M-LOK Weights "Mark" are a set of two precision brass weights, each weighing one "mark" (250 g), for adding balance and stability to your air rifle or airgun. They mount directly to M-LOK rails and come with a QD connection for attaching a carrying sling. CNC-machined in Norway for a precise fit and a clean, understated look on any setup. Technical Specifications Material Brass Weight per piece 250 g (1 mark) Total weight 500 g Dimensions (per piece) 7.9 × 3 × 1.5 cm Mounting M-LOK Includes QD connection for carrying sling Made in Norway Inside The Box 2 × Ulfhednar M-LOK Weight "Mark" (brass) QD sling connection