/> The Pinnacle of Precision & Performance™ — Altra’s non-micro Forward Mass System (FMS) insert weight system gives archers the power to fine-tune total arrow weight for increased F.O.C. and superior downrange accuracy. Compatible with all Altra arrows larger than 166, these stackable insert weights provide virtually limitless adjustment, ensuring your setup is dialed in for peak performance.
- Blue Loctite recommended for assembly
