Ok, kit is basically done. I need to add wrench flats, but otherwise ready to go. There may be a delay of a couple days getting kits sent out. All of my head space gauge sets are out on UML installs at the moment, but will ship as soon as they become available. Head is timed by use of a nut. Head is then tightened and held in place along with some epoxy for insurance. Fairly simple process, and I will eventually get a how to video done. But in the interim if you'd rather send your bolt in for install, that's no problem. Use code PARAMOUNT for an introductory $75 off. https://www.arrowheadrifles.com/product/paramount-arrowhead-gen2-upgrade/ Head space process will be similar to the UML until I get a larger sample size.