WORKING Simple Semi auto mechanism

Building or modifying BB, Airsoft, and Pellet type of guns. Show off your custom designs, find tips and other discussion. Target practice only!
brandon2513
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Fri Apr 30, 2021 3:44 pm

This is a simple pneumatic mechanism I made. Just uses a 3 way roller mechanical valve and a QEV. I need ideas on a working bolt so if you have any plz lmk.
https://www.youtube.com/watch?v=giUCB2LV_QM
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farcticox1
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Fri Apr 30, 2021 5:46 pm

This works really well
piston.jpg
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I built it into my single shot airsoft
semiauto (1).jpg
semiauto (2).jpg
Made the piston from a 6mm bolt and a piece of nylon
20200822_190607.jpg
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jackssmirkingrevenge
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Sun May 02, 2021 7:00 am

The blow forward bolt definitely works and is relatively easy to build:



What projectiles are you looking to fire though?
hectmarr wrote:You have to make many weapons, because this field is long and short life
brandon2513
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Mon May 03, 2021 7:59 pm

jackssmirkingrevenge wrote:
Sun May 02, 2021 7:00 am
The blow forward bolt definitely works and is relatively easy to build:



What projectiles are you looking to fire though?
i was thinking paintballs or rubber paintballs
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jackssmirkingrevenge
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Fri May 07, 2021 12:05 pm

For rubber balls a simple breech like farcticox1 made here would do the trick, paintballs would get smashed though.
hectmarr wrote:You have to make many weapons, because this field is long and short life
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