It sure is. :D
I started my son out on a bolt action .22 when he was eight. He shot that to learn the basics and until I saw he was getting bored. That was right before his 13th b-day. At that point I decided he was ready for his first AR. I built the one you see above, and utilized an M261 .22 adapter kit.
The M261 kit cut down on the cost of training, and after a couple years I sold it and used the funds to purchase a standard bolt and carrier.
Everything you need to know......:) https://www.m4carbine.net/showthread.php?t=35490

