I'm looking into getting my Parcours barrels threaded for chokes and my options are the Briley thinwall or the Extreme thinwalls. Does anyone have experience with these?

I have a nice used early edition Kreighoff K80 Parcours 12 gauge in the 'Parcours Special' Grade with deep engraving. This gun features 32' fixed choke barrels ( M/IM ), standard flat tapered flat rib, Bavaria grade wood with an adjustable comb. LOP 14 3/8" (approx), Drop 1.5" - 2". Gun...

I have the following for sale. It is like new. I purchased brand new in April of 2016 and fired fewer than 750 shells. Gold Plantation Scroll receiver and iron. Engraved by Katherine Nonn. Serial number 107813. This is a nitride receiver and has the "short" trigger. 32" Parcours barrels...