The Scope Rail is designed to fit a 3/8in dovetail Airgun scope. Picatinny is also a selectable option (You can find sets of scopes + rings at less than 10 USD on Aliexpress or Amazon)
The side greeblie is resin printed and designed to be glued to the receiver.
NOTE: This kit has only been tested on the spring version of the STF-12, not the Gas version.Kit designed by Tidal Lock Intergalactic and is produced under license