drone,
Congrats on your first M1....
BUT.... Don't know who told you that your rifle was made on "April 9th, '42", but production dates are broken down by month. NOBODY has records of the exact day a rifle was made, not even the Army.
Barrel: The 1951 date tells when the barrel was manufactured..... it could have been several years (up to 15) before it was actually installed on a rifle. The mix of HRA & IHC parts also argues for a later install date. Also.... the muzzle has been trimmed back WAAAYYYY farther than an M1 is supposed to be trimmed..... which argues that at one time the muzzle must have been SEVERELY hosed or it would not have needed such drastic treatment. Even in the photos it's obvious.... the barrel of the M1 normally sticks out 3/8" beyond the "lip" of the gas lock. The muzzle on yours can't even be SEEN beyond the body of the lock itself, let alone the lip. An M1 muzzle is not supposed to be trimmed back more than .100"... yours has to have been whacked off by at least .600".
Unless the gas port was also opened up to compensate, you may experience FTF's and short strokes due to lack of enough dwell time at the gas port.
Also, there were no "heavy" USGI barrels. Whoever told you that was playing you for a rube.... sorry.
Wood: The stock and handguards look nice, but sure do resemble Boyd's aftermarket to me... not USGI. I could be wrong though....
All in all, you may have a fine rifle, but I have to agree that you overpaid by a fair amount for what you have..... by several hundred bucks anyway.
Question: You live in Ohio??? Why didn't you just run up to Camp Perry and buy an M1 from the CMP?? You'd have had your pick of lots of rifles, and for $850 you could have gotten an all correct rifle (aka Correct Grade), or for $500 a ready to be issued to troops Service Grade. Also, the CMP rep is top notch and customer service is the envy of the entire firearms industry.
Best regards,
Swampy
Garands forever