[Shadowww]

Actually, you can make it MUCH shorter (Non-HS Rocket Launcher ONLY).

pawn Code:

#include <a_samp>
public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if (newkeys == KEY_FIRE && GetPlayerWeapon(playerid) == 35) GivePlayerWeapon(playerid, 35, 1000);
    return true;
}