Altra Non-Micro Forward Mass System Insert Weights

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The Pinnacle of Precision & Performance™ Altra non-micro Forward Mass System (FMS) insert weight system offers fine adjustment of total arrow weight to increase F.O.C. and improve down range accuracy. The non-micro insert weights are designed for use with all Altra arrows larger than 166 and are stackable for infinite weight adjustment. Fitment: Altra 23, Altra 27, Altra 246, Altra 204 Weight: 10 gr, 20 gr, & 50 gr Quantity: 12-pk Note: Blue Loctite recommended for assembly Show more