How about doing an effective base defense with the use of airsoft sentry guns? Here's a video on how to make one by Wawa Videos... "In this tutorial, I will be explaining how to build a airsoft sentry gun. I hope that you enjoy this video. If so, I would appreciate it if you gave it a like!"

Here's a closer look at the Bel Tec Airsoft Sentry Gun that was on display at the RedWolf Airsoft booth during the IWA & Outdoor Classics 2014. Taken by Airsoft Keks, there were two of these on display. Useful for fixed defence in airsoft games and should be a tough one to get through even at night as it has IR vision and you can control it remotely.

It's now a reality, an airsoft sentry gun that will watch the fort for you. This is a demo video of a sentry gun made by Scott Bales of Deep Earth Bunkers using an airsoft gun though you can also mount a real steel weapon on it. It's impressive and responsive enough, though it will still need a human operator to identify friend from foe. Now, if they'll just mount an airsoft minigun on it, then we'll all be set for some difficult bunker assault scenario.