IF, and ONLY IF, you gave me, or any other guy who has all the tools and training to, well, make any of the parts, much less fit existing parts, all the go-fast parts to convert an AR to a M4/M16, then sure, it’s “easy.”
But then, for me, making a simple blow-back full auto isn’t difficult either. I’m talking something like a M3 “grease gun” - it’s a very, very simple design and it works in full-auto (and only full auto). It would be just as simple for thousands to 10’s of thousands of other gunsmiths, machinists, mechanics, etc.
Give a basket full of M16 parts to a mechanical dweeb such as Piers “Knob Cheese” Morgan, and they’ll find a way to screw it up, starting with launching springs across the room.
For perspective on how easy or hard it is to make a full-auto weapon, one has to consider the AK made from a manure shovel:
(warning, there’s some obscenity sprinkled throughout here, but the end result is for-real and entirely valid, IMO)
FWIW, my favorite part of that huge photo-essay was the Russian Blue kitty. We used to have one, they’re a great kitty. Very affectionate.
Guns are not hard to make. Period. Nice guns are hard to make nice. But make a functional weapon? Pfftt. There are street urchins in the mountains of Pock-i-stan churning out weapons by the dozens and dozens with an electric hand drill, a collection of files, a forge and some skill. They might not be high quality, but they work just fine.
Thanks, again.
I have much to learn.