$80 delivered in the US GUN WAS SOLD I have parts and kits available below
Category: LFN-764 KN-1848 Parts
Complete O-ring kit for Duo-Fast KN-1848 on eBay
Rebuild Duo-Fast LFN-764 Pictures of part locations below KW-120-3 AKA 442640 Click picture to full scale, and Picture will open in a new tab. Complete O-ring kit, ships with an easy to use schematic and O-ring reference sheet.