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166 Insert/Outsert - 12 pack

Regular price $54.99

The Pinnacle of Precision & Performance™ Altra Reinforced Concentric Outset System (A.R.C.O.S.) fits our Altra Arrows 166 Shafts and are machined out of 7075-T6 aluminum for unmatched durability and performance, with optimal fit options.

The insert secures into the arrow shaft at a depth of 0.875", while the outsert then threads directly onto the insert and encapsulates the leading end of the arrow at 0.43" creating unmatched durability.  Essential rubber O-rings come pre-installed on the insert within the A.R.C.O.S., as they aid in locking the outsert in place which reduces vibration and improves concentricity between the outsert to the insert for a more precise arrow set up and down range accuracy.

Features:

  • Comes in 12 pk QTY
  • Available in four sizes - 250, 300, 350, & 400 spine
  • 50gn Total Weight
  • Accepts micro FMS insert weights

Altra Arrows highly recommends using a foam style arrow target when shooting arrows that have an ARCOS system, as the outserts can get stuck in filler of bag style targets which can damage the insert/outsert system or arrow.

Find Assembly Instructions HERE

Customer Reviews

Based on 4 reviews
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C
Cody Baldrick

166 Insert/Outsert - 12 pack

D
D.J.
Really like the outsert

I’m really digging this outsert system. I wasn’t sure at first but dang it’s held
Up to some beating and haven’t had any issues.

D
D.J.
Great outserts

The outserts are great !! I’m very impressed. I shot 1 arrow about 100 times just to see how well the outsert held up and it held up tremendously!!

R
Ronnie Castro
Great system

Love the insert outsert system. Puts my one six sixes at the grain I prefer to shoot. Super fast, easy to put together. Love altra arrows, 10/10 would recommend

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