Altra Archery Micro Insert Weight 12 Pack The Altra Archery Micro Insert Weight system gives archers complete control over arrow weight and front-of-center (FOC) balance. Designed specifically for Altra .166 arrow systems, these stackable Forward Mass System (FMS) weights allow precise customization of arrow performance for improved downrange accuracy, enhanced penetration, and optimized arrow flight. Available in 10-grain and 20-grain options, the FMS system provides virtually unlimited tuning possibilities for serious archers and bowhunters. Key Features Designed for Altra .166 arrow systems Forward Mass System (FMS) weight technology Increases front-of-center (FOC) balance Allows precise arrow weight customization Stackable design for flexible tuning options Available in 10-grain and 20-grain weights Helps improve downrange accuracy Ideal for hunting and target archery setups Customize Your Arrow Performance The Altra Forward Mass System allows archers to fine-tune arrow weight and balance to match specific shooting goals. By increasing weight at the front of the arrow, archers can optimize front-of-center balance, improve arrow stability, and create a setup tailored to their bow, draw weight, and shooting style. The stackable design allows multiple weights to be combined for virtually unlimited tuning flexibility. Whether you're building a high-FOC hunting arrow or adjusting total arrow weight for competitive shooting, the FMS system provides a simple and effective solution. When paired with compatible Altra components, Micro Insert Weights help archers maximize consistency and confidence with every shot. Quick Specs Brand: Altra Archery Product Type: Micro Insert Weights Quantity: 12 Pack Weight Options: 10 Grain or 20 Grain Compatibility: Altra .166 Arrow Systems Design: Stackable FMS Weight System Assembly Recommendation: Blue Loctite Recommended Compatibility / Works With Altra .166 Arrow Shafts Altra ARCOS Insert/Outsert Systems Altra .166 Arrow Points Altra Micro Insert Weight Tool Bowhunting Arrow Builds Target Archery Setups High FOC Arrow Configurations Custom Arrow Tuning Systems Best For Increasing front-of-center (FOC) Custom arrow weight tuning Building high-performance hunting arrows Improving arrow stability Long-range shooting setups Target archery optimization Advanced arrow customization Fine-tuning broadhead setups Frequently Asked Questions What are Micro Insert Weights used for? Micro Insert Weights are used to increase arrow weight and front-of-center balance, helping archers customize arrow performance for specific shooting applications. What arrows are these weights compatible with? These weights are designed for use with all Altra .166 arrow systems and compatible FMS components. What weight options are available? The Altra Micro Insert Weights are available in 10-grain and 20-grain options. Can multiple weights be used together? Yes. The stackable design allows multiple weights to be combined for virtually unlimited tuning flexibility. Is any thread locker recommended? Yes. Altra recommends using Blue Loctite during assembly to help secure components and maintain consistent performance. Fine-Tune Every Shot Whether you're building a high-FOC hunting arrow, optimizing a target setup, or experimenting with different arrow configurations, the Altra Archery Micro Insert Weight 12 Pack gives you the flexibility to achieve the perfect balance of weight, accuracy, and performance.
