Widened the hitchhikers shoulder piece and lock belonging to the retractable stock assembly. It doesn’t interfere with ejection so the ump can be fired from all positions. It’s a little wobbly fully extended in it’s current iteration. It’s 27.5 inches extended with the muzzle device so think about SBR rules and by way of transitive property…your dog. I’m not finished yet but if there’s enough interest I’ll upload its current iteration on my od account after work. I plan on modifying the rails and lock to get more stability out of them fully extended.


Hello, context would be great :-) What is that gun?
The Hitchhiker is a .22LR single shot without a magazine, and your’s doesn’t appear to be a Hitchhiker.
They used the Hitchhiker retractable stock.
It’s the ump 11/9. I referred to it as “the ump” in the second sentence I figured that would be enough context. It’s arguably the cheapest Mac/AR project you can get into as a beginner. 100 bucks for the bolt 70 ish for the barrel/trunnion 25 for the trigger/hammer and 30 for the plate (more like 5 but the minimum order is 30 bucks).
Thanks! You’re very lucky to be able to buy these parts. :-)