Wisp project update

I am absolutely stoked by this project. Excellent instructions from kaewon, and I love the ingenious integration of springs and detents from a regular ar15, which I have a extras of. This is gonna be topped off with a proto barrel 8.5" on one of my extra sbr lowers.

Printed in polymaker pa6cf, push plastics pc pbt, polymaker petg (the knob don't worry no load bearing parts were used in that filament) & esun pla st.

The only changes away from the design was chopping a mag catch plunger for the arm detent, and adding a long M3 bolt to the bolt arm- even in pa6cf it was a bit floppy and it definitely made it more rigid. Even tho this is the "ar15 friendly" version the end near the buffer tower could use a bit more more sitting flush with the lower receiver and I had to remove my bolt catch and buffer detent and spring. But I ain't complaining, overall design wise it's excellent.