Grappling hook in custom mod

Ok, heres my problem, I need a Swep that can go into my mod. i need it to be like a grappling hook weapon. please let it be a Hl2 weapon model. also, can you make it spawnable in hammer? this is alot but it is on short notice for me and ive run out of options. thanks!
Kinda like the spiderman swep for gmod.
Or the grappling hook from smashball. not that type of model. just something like a graplling hook. u must get the point!

it cant have lua

OMg I need this, sounds awesome

[editline]01:15AM[/editline]

I didnt make it

Er, what?

EDIT: whoops. Sorry for the bump.