The Altra Reinforced Concentric Outset System, or A.R.C.O.S., is an engineering marvel for the dedicated archer. Designed specifically for 166 shafts, this system offers unparalleled durability and precision—qualities demanded by both seasoned hunters and competitive archers alike.
Manufactured from high-grade 7075-T6 aluminum, known for its exceptional strength-to-weight ratio, the A.R.C.O.S. system ensures your arrow maintains integrity under stress without compromising on weight. The insert penetrates a substantial depth of 0.875 inches into the shaft, establishing a solid foundation that resists deformation upon impact.
The outsert threads onto this robust insert with meticulous precision, encapsulating the leading end of your arrow by an additional 0.43 inches. This design not only enhances structural stability but also safeguards against potential damage during flight or upon striking a target.
To further elevate performance, pre-installed rubber O-rings secure the outsert in place effectively reducing vibration—a critical factor in maintaining concentricity throughout the shot cycle. The result is more consistent accuracy downrange; every archer's ultimate goal.
The A.R.C.O.S. system comes available in four spine sizes to ensure optimal fitment tailored to your specific needs and preferences—because no two arrows are quite alike when it comes to achieving peak performance.
Features
- fits altra arrows 166 shafts
- machined from 7075-t6 aluminum for unmatched durability
- secure insert depth: 0.875 inches
- outsert encapsulates arrow end: 0.43 inches
- pre-installed rubber o-rings reduce vibration and improve concentricity
- comes in 12 pk qty
- available in four sizes: 250, 300, 350, & 400 spine
- 50gn total weight
- accepts micro fms insert weights
- enhances downrange accuracy and precision