This PDF product is "Building Guide for the P308 KIRETT".
The P308 KIRETT is 6 rounds Semi-automatic Rubber Band Gun.
It has a "Short-Stroked-Linear-Moving-Mechanism" and has one moving-part only.
This plan includes two kind of the Trigger-releaser.
One is newly designed for this gun, other pattern is the same method with the P303 GIZA 66°.