Pictures or it did not happen.
The x39 kit comes with nylon links. Super easy to load, hassle to pick up after-words. They will not modify your x39 bolt for semi operation. You'll have to get that done yourself. I found it easiest to just keep a fully populated bolt in a M1919 bolt pouch just in case the spring lets go. Plus no need to swap extractors or sears or anything. Just swap barrel, guides, booster and bolt and be on your way.
Careful with the Sarco white M1919 belts as some of them are made for some unknown round. 30.06 or 7.62 are very hard to load up, but once you get them in there they stretch out nicely for future reloads..
7.62x39 conversion kit.