[park4bmx]

you can do a check with what weapon the player enters into the vehicle
like under

pawn Код:

public OnPlayerEnterVehicle(playerid, vehicleid, ispassenger)
{
if(GetPlayerWeapon(playerid) == 29)
    {
    //The players Enters the vehicle with MP5
    }else{
    /*You got 2 options [1] to ResetThePlayer Weapons
    //[2] to givehim wep id (0) witch will se the player holding no weapon
    Option [1]*/
    ResetPlayerWeapons(playerid);
    //Option[2]
    GivePlayerWeapon(playerid, 0, 1);
    }
    return 1;
}

Just choose one option and remove the other one