My individual preferred is to include machined sections, welded elements, and modular fixturing parts right into a fixture simultaneously to optimize the standard, even though minimizing the time and money invested building your fixturing technique. I've two AR builds. Just one Gwn2 and just one a Gen four. I used https://fernandoplymz.worldblogged.com/39002718/5-easy-facts-about-flexible-welding-platform-described