Guns

PepperBall, Napalm cannon, Flame thrower under category http://sasecurity.wikia.com/wiki/Category:Guns
Net gun , http://www.protectglobal.com/ Fog dispersion system , http://www.smokecloak.com/en/
Gauss gun,Electric Cross Bow Rapid and automatic firing of bolts.
https://www.shotspotter.com/ trivial to Patents hack via Fronting company
Airtank airguns diy tank containers for co2
https://www.youtube.com/user/DemolitionRanch/videos demolition ranch channel 
=== golfball ===
https://www.spudfiles.com
https://youtu.be/9ydJXOTf1-4 vacuum by nighthawkinlight channel. 
https://youtu.be/wyB0GE3eVjU , https://www.youtube.com/watch?v=PqNc-KbdO1U air cannon valve , air actuated ball valve for rapid discharge of gas. It uses rack and pinion motion for linear to rotational as the ball is rotated to release the gas. See quick release exhaust valve from Net gun.
https://youtu.be/cBazTqyIp2w collinfurze semi auto potato cannon 
https://www.instructables.com/GolfballAntennaNerf-Cannon---Build-One-That-Shoo/
https://www.youtube.com/watch?v=PqNc-KbdO1U air powered projectile launcher
https://www.youtube.com/watch?v=cKmbjF-sL3Q tennis ball cannon
https://imgur.com/bdT8vVv golf ball cannon , rotating cartridge
https://tshirtgun.com/ Two co2 canisters with Patents electronic firing mechanism. 
https://usamodelkina.ru/13467-pnevmaticheskij-arbalet-po-motivam-metro-2033.html?utm_referrer=https%3A%2F%2Fza.pinterest.com%2F
https://www.youtube.com/watch?v=2TfUKuPdhH4 airgun
=== links ===
build sentry tower, https://archive.is/EOGUX , https://web.archive.org/web/20170612052645/http://projectsentrygun.rudolphlabs.com/make-your-own/setup-the-psg-codeand , https://github.com/sentryGun53/Project-Sentry-Gun object tracking ,https://www.youtube.com/watch?v=nTs7VRFV36c, with Object tracking.
Category:Guns