02-17-2019, 05:02 AM
What LRRPF52 said. When we build 5.56 guns, we do a lot with the extraction system (special extractor, special spring, special ring, special spring insert, select polishing). On 6.5 builds however, we only use a quality spring and insert (and, of course, the proper extractor). Then we’ll polish the extractor in select spots and call it good.