[Konstantinos]

I tested and it works.

pawn Код:

Pawn compiler 3.2.3664          Copyright (c) 1997-2006, ITB CompuPhase

pawn Код:

CMD:removeweap( playerid, params[ ] )
{
    new
        id, weapon;

    if( sscanf( params, "ri", id, weapon ) ) return SendClientMessage( playerid, -1, "Usage: /removeweap <ID/Part Of Name> <Weapon ID>" );
    if( id == INVALID_PLAYER_ID ) return SendClientMessage( playerid, -1, "That player isn't connected!" );
    RemovePlayerWeapon( id, weapon );
    return 1;
}

stock RemovePlayerWeapon( playerid, weaponid )
{
    new
        plyWeapons[ 12 ], plyAmmo[ 12 ];

    for( new slot = 0; slot != 12; slot ++ )
    {
        new
            weap, ammo;
            
        GetPlayerWeaponData( playerid, slot, weap, ammo );
        if( weap != weaponid )
        {
            GetPlayerWeaponData( playerid, slot, plyWeapons[ slot ], plyAmmo[ slot ] );
        }
    }
    ResetPlayerWeapons( playerid );
    for( new slot = 0; slot != 12; slot ++ )
    {
        GivePlayerWeapon( playerid, plyWeapons[ slot ], plyAmmo[ slot ] );
    }
}