[ConnorMcLeod]

You don't need to check for weapon_knife and weapon_c4.
Instead you can :
- check if iWeapon is CSW_C4 or CSW_KNIFE
or
- check weapon cost before you send ham_strip_weapon and then check if price is > 0

You don't need to clamp money, just use min(cs_get_user_money( id ) + iRefund, 16000).

You could add shield return.

Other than that, code is ok.