Knave by AMSPawn

Knave is a slide prime pistol using straight talon mags. Taking advantage of smaller than normal springs and PT allows it to be a relatively compact blaster that excels in the 130-175fps range. 

Includes plunger tube lube, spring of your choice, 15CM 13mm barrel and all hardware. 

12kg spring and 20CM barrel is available but not recommended. 

Check it out here:

https://www.printables.com/model/1477209-knave-an-affordable-slide-primed-pistol