If you're planning on putting Slams and Greandes in your map
Here's a fixed VMF for those pickups (slam_grenade_spawns_patch.vmf)
I've new also added them in the NEWEST map too. (remake_turning_weapons_holo.vmf)

Special thanks to Jora_ from Gamebanana for assistance in this update.

Here's an extra example map with these "weapon scripts" built-in.
https://gamebanana.com/maps/196167