function BulletPenetration( hitNum, attacker, tr, dmginfo )

    local DoDefaultEffect = true;
    if ( !tr.HitWorld ) then DoDefaultEffect = true end
    if ( tr.HitWorld ) then return end

    if tr.Hit then
    end

    if ( CLIENT ) then return end
    if ( hitNum > 6 ) then return end

    local bullet =
    {
        Num         = 1,
        Src         = tr.HitPos + attacker:GetAimVector() * 4,
        Dir         = attacker:GetAimVector(),
        Spread  = Vector( 0.005, 0.005, 0 ),
        Tracer  = 1,
        TracerName  = "effect_trace_bulletpenetration",
        Force       = 0,
        Damage  = 25 / hitNum,
        AmmoType    = "Pistol"
    }
    if (SERVER) then
        bullet.Callback    = function( a, b, c ) BulletPenetration( hitNum + 1, a, b, c ) end
    end
    timer.Simple( 0.01 * hitNum, attacker.FireBullets, attacker, bullet )
    return { damage = true, effects = DoDefaultEffect }
end