Kinetic II's (the most recent incarnation) are NOT the same arrows as A/C/Cs, other than they are both made of alum and carbon. The KII's and the Beman Matrix were the same arrow, the only diff being camo on the KII

A/C/Cs in the common 3-XX series (3-49, 3-60, 3-71, etc) are made with 3 wraps of carbon (hence the "3') nd a thinner alum core tube than the A/C Kinetic IIs...The KII's/Matrix are made with *2* wraps of carbon and a thicker alum core tube.

The original A/C Kinetics WEREthe sameconstruction as a regular A/C/C(and sized the same, i.e 3-49, etc), but had an extrathin outer layer for the camo finish. Unfortunately that camo finish was not very durable and also faded quite easily. The original Kinetics also had a factory installed uni-bushing.They were dropped for a year or two and then when Easton introduced the Photo-Fusion process, they brought out the K2.

In my testing, I've found the KII's to suffer in the QC area compared to the original Kinetics and standard A/C/Cs...the problem usually being straightness runout issues. They were not held to the same weight or spine tolerances either (but were still very goodin those areas)