Kythera Semi-Auto V3 / AK

Kythera is one of PolarStar's most innovative products in the last decade. This HPA system is purely mechanical, which means you don't have to worry about the battery, FCU or other types of electronics. This also means that the system is fully waterproof and suitable for use in harsh weather conditions.

Designed from the ground up as a mechanical system, it uses a realistic trigger mechanism - designed to replicate the function, weight and feel of a real single-action firearm trigger. Weight and overtravel can be adjusted to the user's specific preferences.

The Kythera SA is designed based on a complete firing cycle in one trigger pull. It resembles the Fusion Engine and F2-proven closed bolt performance in a fully mechanical and waterproof package.

This HPA system fits into a standard gearbox and in most cases requires no modification to the gearbox housing. Its operating pressure range is from 60 psi to 180 psi and it can achieve a muzzle velocity of 270 - 500 fps at 0.20 g with a 6.05 x 380 mm barrel, making a Kythera a universal solution to the user's needs.