Lincoln K and KP Numbers › Lincoln Electric KP5147-1 GUN TUBE EXTENSION ASSEMBLY 3 IN Lincoln Electric KP5147-1 GUN TUBE EXTENSION ASSEMBLY 3 IN Sale Price: $58.73 Original Price: $65.78 GUN TUBE EXTENSION ASSEMBLY 3 IN PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000 Add To Cart Added! GUN TUBE EXTENSION ASSEMBLY 3 IN PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1.000