Altra Forward Mass System Micro Insert Weights Weight:10gr This ultra-fast crossbow measures an

This ultra-fast crossbow measures an incredible 5

Newly updated in Mossy Oak Bottomland camo

Multiple Heat zones (Thighs

Fitted with a 61-grain aluminum insert and 3″ Q2i Fusion X-II Vanes

Altra Forward Mass System Micro Insert Weights Weight:10gr This ultra-fast crossbow measures anThe Pinnacle of Precision & Performance Altra Forward Mass System (FMS) micro insert weight system offers fine adjustment of total arrow weight to increase F. O. C. and improve down range accuracy. The micro insert weights are designed for use with all Altra 166 arrows and are stackable for infinite weight adjustment. Fitment: Altra 166 shafts Weight: 10 gr or 20 gr Quantity: 12 pk Blue Loctite recommended for assembly