Besides Columbia Precision Tang Peep Sights, we deal in older fireams, mostly Colts and Winchesters. As for Winchester parts, we've been dealing in these things for more than 40 years, so if we can help with problems, email or call, and we'll give our best effort to do so. We are a Federal Firearms Licensee and have ownership in the largest shooting sports center in northern Colorado. We also currently have a number of Colt Single Action Army Revolver barrels and cylinders. If you need a specific barrel or cylinder, email or call for price and availability.
Most of the guns, and some parts, are listed on GunsAmerica.com, under "Columbia Precision" (https://www.gunsamerica.com/Search.aspx?Keyword=columbia%20precision). Paste in this address or simply go to the GA main page and type "Columbia Precision" in the search box in the upper right. You will see a listing of all the offerings which you can scroll through to view individual items.
We don't list all available parts, but you can email us for specific parts and availability. We keep a number of Colt Single Action barrels and cylinders, mostly 1st generation. We also have some Winchester lever gun parts, but the supply is shrinking after offering them for 15 years.
Thanks for looking!
Columbia Precision, P.O. Box 301, Timnath, CO 80547