Received a mostly-correct 1943 M1 from CMP while I was on vacation. Comments/questions appreciated. I took my CMP SA SG M1 apart last night and here's what I found. I used Scott Duff's book and a data sheet provided by a friend) 1. s/n: 1950277 (late-Sept., 1943) 2. barrel: SA 9-1943 3. muzzle - takes an M2 to about 3/16" of the bullet showing 4. barrel band: flat, later style 5. Latch clip - square front 6. bolt: a -12 SA with a S-06 (diamond) -1943 7. op-rod a -6SA, apparently uncut (also 1943) an "M" on the handle 8. receiver marks: B-12D [diamond] w/ large "7" plus a "-30" with the drawing no. 9. ferrule: stamped 10. bullet guide: forged - no side cuts 11. follower: forged with stamped "8" - late-1941 12. follower arm - no bevel 13. op-rod catch: late SA (1941 or later) 14. follower rod: long-fork, sta,mped, riveted - early 1944 and later 15. Trigger housing: a -12SA (1943) 16. trigger guard: forged - no markings 17. hammer: -2SA (1941-42) 18. safety: SA-11 (1943-45) 19. front sight SA 5/8" no markings 20. gas cylinder - WINCHESTER! - wider sight base, round rear barrel ring. 21. gas cylinder lock: champfered WWII 22. lock screw - four-slot w/ P O (Henry Owens) 23. Rear sight: T105; SA ribbed sight base; SA windage knob w/ "NHC" 24. Stock: walnut; only discernable marking: a 1/8" "670" just ahead of the butt plate. No "P" - maybe a part of a cartouche, but nothing readable. Possible evidence of sanding. Usual dings and dents 25. handguards - walnut - appear to match stock - metal stamped late WWII. Comments: I'm very pleased with this rifle - I wanted a mid-war rifle with at least a matching barrel and not only got that but most other major parts appear to match as well. It has a few later parts, evidence of a mild rebuild, possibly at the lower level. The Winchester gas cylinder was a surprise. I double-checked and it does have a round rear barrel ring - no evidence of a "flat-top", used by SA. Minor disappointment with the T105 sight and no cartouches on the stock, but I would call this picky on my part (evidence of the "...what do you want, eggs in your beer?" -syndrome!). Even the stock appears to have been sanded and looks original, not a rebuild. Interested to hear comments, especially on the Winchester gas cylinder. Sorry for the long post - waiting a loong time and it was WELL worth the wait - just the M1 I wanted! Thanks, CMP!