Beginning Number

Ending Number

Manufacturer

Year Contract Completed

1,357,474

to

1,387,xxx

Winchester duplicated SA s/ns   (approx. 30,000)

Jan. 1943

1,600,000

to

1,601,149

“Voluntary Contribution”[1]    This one is something of a mystery.  Several examples exist in this range and are generic SA WWII receivers.

?

1,601,150

to

1,640,xxx

Duplicate s/ns used on “Win -13s” taken out of the SA s/n range

Jan. – June ‘45

3,200,000

to

3,800,000

Serial number range of M1Cs

1944 – 1945

3,888,xxx

to

4,200,000

Unaccounted for serial numbers between WWII and Korea.

Oct.1945 –

Jan. 1952

4,440,000

to

4,445,xxx

IHC receivers produced by SA. Including

“Arrowhead” and “Postage Stamp” logos. Exact quantity and ranges unknown. Experts feel that no more than approximately 1500 “Arrowheads” and 1100 “Postage Stamps” were produced.

1953[2]

4,638,xxx

to

4,660,000

IHC 4 Million “Gap Letter” logo receivers produced by Springfield. (approx. 22,000)

1953 – 1954

5,198,034

to

5,213,034

IHC 5 Million “Gap Letter” logo receivers produced by Springfield. (total 13,243)

1955 – 1956?

5,213,035

to

5,217,xxx

IHC receivers produced by HRA. End of range and total quantity unknown.

1955 – 1956?

6,034,330

to

6,034,729

Springfield s/n range assigned to HRA for an overrun of 400 additional rifles. Rifles MAY have HRA 1952, 1953 or 1956 barrels, or even SA barrels.

Aug.1956

6,084,405

to

6,100,499

Last official M1 Rifle produced[3] vs. the last reported/observed serial numbered receiver. Assembly of new rifles continued into 1957 including many National Match Rifles.

17 May

1957 - ?

X6,000,000

to

X6,001,9xx

These are the so-called “X Guns”[4] among the last M1 Rifles assembled including many National Match Rifles. (Approx. 2,000)

1956 – 1957