Micro Insert Weight 20 grain

Precision-engineered for the discerning archer, these 20-grain Micro Insert Weights represent the culmination of advanced ballistic research. As integral components of the Altra Forward Mass System (FMS), they facilitate meticulous adjustment of arrow weight distribution, enhancing Front of Center balance and delivering exceptional downrange accuracy. Each 12-pack offers sophisticated customization capabilities through their stackable design, compatible exclusively with Altra 166 arrows. For optimal integration, application of Blue Loctite during assembly is advised—a subtle yet essential detail for those who appreciate the nuances of superior archery equipment.