Hey Chris...
My original configuration was the turkey gun. The gun shop I use(a friend of mine actually) had gotten a couple of slug barrells that had to be sold as used, but were never fired.
If you like, I will call him and ask if he has any more. I paid $150 for mine.
Speaking of the turkey barrell...also very accurate and patterns great with #5 hevishot and Win #5's. I havent tried an aftermarket choke tube in it yet, but considering it shoots as well as my Beretta, Browning and Benelli SBE with XX and XXX Comp-N-Choke's in them I havent found a need to try one yet in the Encore. And...considering how light and easy handling the Encore is I am selling two of the above mentioned shotguns so I can buy more Encore barrells. :-)