Folks, there is one more item that I almost never see included in these kits because it is not really a cleaning device. I learned from Bill Ricca that these were initially called "Separated Cartridge Extractors" and were always known as "Ruptured Cartridge Extractors" from the time I came on active duty in 1971.
There were two types issued for the M1 Garand and one type for the M14. The M1 type that chambers like a cartridge is the handiest because you can use them on both Garands and M14's. After you chamber it, you put the buttstock on the ground and stomp the op rod handle to the rear and the ruptured case will come right out. I have NEVER seen a ruptured cartridge case that would not come out of an M1 or M14 with these. When I "walked the line" as both a Standard Infantry Weapons Repairman and as a Rifle Team Equipment Repairman (NM Armorer) I ALWAYS had one of these in my pockets somewhere. Most of the time I had to use them was with reloaded ammo, but I have seen it necessary for some foreign surplus stuff. Consider one of these as super cheap insurance. You may never need it or only need it a few times in many years, but without it, your day at the range is over and you can't fire your rifle until you get one and get a ruptured case out.
From Bill Ricca's site, here is the one I'm referring to:
A13 Separated Case Extractor, Mk II, chambers
like cartridge.................................................... $12.00
Edited to add: Should you ever function fire an M14 with a .30-40 Krag round, I guarantee you will need one of these.
I also bought a different, but similar ruptured case extractor for 7.62X39mm Soviet when I had an SKS. Never needed it for my rifle, but I used it a handful of times to clear the rifles for other folks. That cartridge is enough shorter you really need the correct tool for that cartridge.