I really doubt if you will find an 18 1/2" or 20" barrel with screw-in chokes, at least a Remington barrel. I just finished installing screw-in chokes in one of my 20" barrels. You can see how it is done by going to www.pureguntalk.com/showthread.php/172-All-around-go-to-Shotgun-Build
. Click on the photos in each post.
If you have any questions about it, feel free to ask.
Dosn't matter what day of the week it is, the best day is the day with your finger on the trigger--jra
Last edited by masterPsmith; 10-06-2012 at 06:50 AM.