Sentry Poser
This addon was made by Mahalis more than 12 years ago – all I did was fix a GM13 bug that deleted the posable sentries as soon as they spawned, as well as add mini-sentries and dupe/save compatibility. If the original creator of this addon asks for it to be taken down, then I will remove it immediately.
A tool that spawns posable Sentry Guns and lets you aim them wherever you want. You can spawn Sentries of any level, or spawn a Mini-Sentry with the Reload key.
Requires Team Fortress 2.