Just finished a early USAF 604 build.
Edgewater buffer, no hole handguards,Colt charging handle, dimpled pins,selector, chrome slick DPMS carrier, Nodak partial fence lower. Still need a early buffer tube
https://www.milsurps.com/images/impo.../MVC015S-1.jpg
https://www.milsurps.com/images/impo.../MVC016S-1.jpg
https://www.milsurps.com/images/impo.../MVC012S-1.jpg
https://www.milsurps.com/images/impo.../MVC019S-1.jpg
https://www.milsurps.com/images/impo.../MVC018S-1.jpg