Tell us about yourself!
In my college days we used similar setups for humans versus zombies games. Loads of fun, and a great way to tone down powerful guns to acceptable power levels. Swappable "shells" made of couplers make for faster reloads. Adding the air restrictor is a great way to ensure all barrels get sufficient air to propel darts. Never thought of that. Well done =)
Make a takedown bow from skis!