Does anyone have a link to a good beginner's guide to these types of rifles? The fewer acronyms in the content the better

Moderator: carlson1
Molon_labe wrote:That would be 100% no joke!
I can eat/sleep the AR/M-16, I just found that I can order a full M-16A2 style AR for right at $500 bucks from Model1Sales
Apparently you don't need a FFL either...wonder how that is done (unless they don't ship the lower receiver?!?)
dukesean wrote:Thanks Blinking Dog.
Are AR15 parts standardized across the industry, so that regardless of the manufacturer of the upper/lower, stock, shroud, etc they can pretty much be frankensteined into a complete rifle?
dukesean wrote:Thanks for all the links and info. I suppose what I'm really wanting to understand are the internal mechanics, assembly/disassembly, but I've found all that on the forums y'all posted. Oh and what I am really confused about is the ammunition. .223, 5.56, .30 carbine? can I just swap out barrels of different calibers like i can do with some pistols? Also what is preffered "plinker" size ammo vs defensive ammo?