You're right !!! It is all there but demilled strangely.
20 years past IMA had MK3 for $75 if you got 6 kits at a time. Other than a removable barrel, rotating mag well and stamped trigger pieces they are all the same.
some day im going to build the two kits I bought a $20 each. I keep hopeing the semi auto stuff will get cheaper an better to make it easier. there on the back back burner.