A lot of DarkRP servers do have anti prop kill. On sandbox, most servers don't, so you can easily prop kill. What you want to do is go into your in-game console with the '~' key, and type 'physgun_wheelspeed 99999999999999' I do this all the time for prop kill. Just spawn a prop, pick it up, and scroll forward to push it away.
I mainly play Garry's Mod. I specializein creating expression 2s. If you would like a code, please comment on my thread or PM me!