It will be very hard to find factory Benelli chokes. Thats the main advantage with going to aftermarket. There everywhere. I have no experance with Trulock chokes, but I hear they are good. Carlson chokes www.choketube.com , and Briley www.Briley.com are some good choices as well. Here is a chart to see what choke type you need. http://www.choketube.com/guide.html Both choke companys are backed by a lifetime Warranty. If you buy 3 or more chokes through Carlsons, you get 5 bucks off per choke, free shipping, and a choke tube case.