The Storm Lake non-ported barrel for my 17L came in a couple of days ago. I ordered it thru TopGlock. It was back ordered and took 6-7 weeks to get here but it was well worth the wait...not a problem. Especially since TG offers it at such a great price. It shoots very accurately. I've not chronographed any ammo yet and don't know if it will clock faster than the original fctory ported barrel. The front sight certainly stays clean now!