KRG M-LOK Forend Weights (Pair) – Add weight to your chassis for improved balance and stability. Each steel weight occupies 2 M-LOK slots and features a contoured shape for a comfortable thumb-shelf grip. Stack side-by-side on compatible forends. Fits: W-3 Pro, W-3 Gen 7, C-4, X-Ray, Bravo, or any chassis with 2 M-LOK slots Weight: 0.365 lbs each (0.73 lbs per pair) • Material: Steel ITAR Restricted. Made in USA.