I made this diagram over a decade ago, but the actual cutaway live model is great to have.
![[Image: ?u=http%3A%2F%2Fi1085.photobucket.com%2F...f=1&nofb=1]](https://external-content.duckduckgo.com/iu/?u=http%3A%2F%2Fi1085.photobucket.com%2Falbums%2Fj422%2FLRRPF52%2FAR15BCG.jpg&f=1&nofb=1)
Bill A. was really big on keeping parts gauged and made or had made his own specific 6.5 Grendel gauge sets, which were part of a standard armorers set for everything else on the AR-15 that was common.
He talked a lot about the inner bore dimensions and a correct gas system configuration that often gets overlooked by almost every DIY builder.
If you ever wondered why the Chain of Command told you to clean weapons bone-dry, its so the armorers could inspect the weapons with their gauges and not have carbon throw off the measurements/GO vs NO-GO gauges.
Bill A. was really big on keeping parts gauged and made or had made his own specific 6.5 Grendel gauge sets, which were part of a standard armorers set for everything else on the AR-15 that was common.
He talked a lot about the inner bore dimensions and a correct gas system configuration that often gets overlooked by almost every DIY builder.
If you ever wondered why the Chain of Command told you to clean weapons bone-dry, its so the armorers could inspect the weapons with their gauges and not have carbon throw off the measurements/GO vs NO-GO gauges.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com