Recently I wrote an article on converting your AR-15 or AR-10 into a different caliber rifle. After publishing it, I thought I should have published how I came about those ideas originally.
Since Killery did not become president, I have relaxed a lot. This has allowed me to think about buying a toy. Yes, a toy. While all firearms should be considered “Instruments of Liberty” (quote from Paul Markel), there are times, you can have a toy. Sometimes it is for games. Those games can be skeet shooting, IDPA or even 3Gun shooting, regardless they are toys.
While contemplating the building of an AR style toy, I started thinking about the calibers and investigating all the different ones that fit the two primary size lowers.
In an AR-15 style rifle, the “gun” according to the ATF is the lower, it has the serial number.