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 Four digit serial number Springfield, need some info...
RetroRevolver77  [Member]
12/22/2012 1:13:39 AM
I think it's 74xx, need to double check. It looks to be in very good condition. Not sure if the barrel is chrome lined. Has the bayonet lug though. Match type sights. $1600. Is that a good deal?
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Different  [Member]
12/22/2012 5:49:09 AM
That dates to 1977. Are the receiver elevation serrations worn? SOME M1A receivers in the 007XXX to 0199XX range were made from AISI 4150 alloy steel. Those receivers were not case hardened but heat treated to about 45 HRC all the way through. They are servicable but the elevation serrations get worn with use. That can be mitigated by installing an elevation repair disk. What is the throat erosion reading for the barrel?
ArmyOrdGuy  [Member]
12/22/2012 2:22:56 PM
Originally Posted By Different:
That dates to 1977. Are the receiver elevation serrations worn? SOME M1A receivers in the 007XXX to 0199XX range were made from AISI 4150 alloy steel. Those receivers were not case hardened but heat treated to about 45 HRC all the way through. They are servicable but the elevation serrations get worn with use. That can be mitigated by installing an elevation repair disk. What is the throat erosion reading for the barrel?


Just loosen the screw in the center of the elevation knob and rotate the knob to another part of the serrations that hasn't been worn (retighten the screw). Too many people get hung up on indexing the elevation settings to the yard (meter) numbers and wear out those serrations. My elevation settings are in clicks up from bottom.

Karl77  [Member]
12/24/2012 1:34:41 PM
M1 or M1a?
Tazaroo  [Team Member]
12/26/2012 9:30:26 PM
Originally Posted By Karl77:
M1 or M1a?


Sort of thinking the same thing but now I get it.
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