The M&A CAR stock is very close to the original. I have 4 of them and I'm happy with them... I have several original Colt CAR "N" stocks and you have to look very close to see the slight differences between M&A version and the original Colts.
I just wish I could find a company that still offered 4 position "mil-spec" CAR buffer tubes, with the "flat back" profile since I could use about 6 of them. Also, a place that HAS the "correct" profiled skinny CAR type of handguard with the 6 ventilation holes AND heat shield... I saw a set from DSA (Was told that they were from DSA.) and they were not shaped like the original Colt versions, but more like a slightly thinner M4 handguards. Trying to keep the costs on my AR-15A2 and early M4 builds down, so original Colt parts will break my budget for these builds.