The Ticky Sentry (aka Clicky Sentry, etc.) is a rare breed of sentry which are essentially just sentry guns with all the ammo drained. This is done by shooting a wrangled sentry at the wall until it is out of ammo and then placing it around a group of people. It will lock-on to an enemy and make clicking noises that imply that it is out of ammo.
Gear[]
Primary[]
No primary is required, but using the Rescue Ranger is very useful in case your sentry is damaged. This way you can heal it without refilling its ammo.
Secondary[]
The main requirement for an Engineer to build a Ticky Sentry is the Wrangler. It is essential to make your sentry use all of its ammo without hurting anyone.
Melee[]
The Gunslinger is popular for this because you can rebuild sentries incredibly fast and because mini-sentries don’t carry as much ammo as a regular sentry. Using other wrenches works perfectly fine and if you do, having extra health in your sentry can save it from Tryhards.
Actions[]
All you need to do is shoot your sentry at the wall until the ammo is drained to get a Ticky Sentry. Now just place your sentry in a place where people will see it or in a group of people. Just make sure to inform people that your sentry is empty, people will probably kill it otherwise.