Springfield Armory Post War

Battle Rifle: The M1 Garand

Springfield Armory Post War

Springfield Armory used these parts for all the post war production. Only rear sight elevation pinions, windage knobs, gas cylinder locks, gas cylinder plugs, hammers, safeties and 6528287 SA bolt heat lots varied. All other parts remained the same.

Bullet Guide Stamped with a notch

Springfield part will have square swage

Op Rod Catch Late

Follower Arm No Bevel

Springfield part has beveled lug bottoms

Follower Assembly unmarked

Late Follower Arm Pin

Clip Latch Square Front

Follower Rod Long Fork Riveted

Late Stamped Flat Lower Band

Lower Band Roll Pin

Handguard Clip Stamped

Rear Sight Aperture

Front Sight Screw No Seal

These parts were used throughout Springfield post war production.

S/N 4,200,000 to 6,009,000.

SA Post War bullet guide swage

Springfield stamped post war bullet guides have a square swage that holds the timing leg on. Some late 6 millions have a circle around this square swage.

SA post War follower arm beveled bottom

Springfield follower arms are of the no bevel type. The lugs the pin goes through are beveled down from the center line to the outside edge. Most later production lack to forging numbers/letters.

Hammer Spring Housing

Hammer Pin

Hammer Spring Plunger

Hammer Springfield C5546008

Used from s/n 4,200,000 to 5,400,000.

Hammer Springfield D5546008

Used from s/n 5,400,000 to 6,009,000.

Trigger Housing 6528290 SA

Trigger Guard Stamped Springfield No Milled Hook

Used thoughout post war production 4,200,000 to 6,009,000.

Used from 1947 rebuilds into the early 4,200,000 production.

Used early post War.

Used from s/n 4,200,000 to 6,009,000.

Used from s/n 4,200,000 to 4,260,000.

Gas Cylinder Lock High Hump

These were used throughout most of Springfield's post war production. Started from s/n 4,240,000 to 6,009,000.

Gas Cylinder Lock Hardened Marked M Straight Front

These were mixed with the WWII type in the s/n 4,200,000 to 4,300,000 range.

Gas Cylinder Lock WWII Type Beveled Front

These were mixed used with the M lock s/n 4,200,000 to 4,300,000 range.

Gas Cylinder Lock Screw Cross Slot Marked O

Used from s/n 4,200,000 to 5,800,000.

Gas Cylinder Lock Screw Cross Slot Marked P and Hex

Used from s/n 5,79,000 to 6,009,000.

Gas Cylinder Lock Screw Cross Slot Marked BS very late production

Used from 6,008,000 to 6,009,xxx.

The BS marked were used in the late 6 millions.

Gas Cylinder Assembly

Gas Cylinder Wide Base Flat On Top Of Rear Ring, no punch mark on the bottom of the bayonet lug.

Stacking Swivel Screw Swedged Off Center

Front Sight .625 to .6875 Wide

Common Post War Bolt Usage

Bolt 6528287-SA Heat lot US1

Used s/n range 4,200,000 to 4,229,999.

Bolt 6528287-SA Heat lot J-1-B

Used s/n range 4,200,000 to 4,229,999.

Bolt 6528287-SA Heat lot US2

Used s/n range 4,240,000 to 4,289,999.

Bolt 6528287-SA Heat lot A10

Used s/n range 4,240,000 to 4,329,999.

Bolt 6528287-SA Heat lot A11

Used s/n range 4,240,000 to 5,329,999.

Bolt 6528287-SA Heat lot A13

Used s/n range 5,290,000 to 5,429,999.

Bolt 6528287-SA Heat lot A14

Used s/n range 5,420,000 to 5,869,999.

Bolt 6528287-SA Heat lot A15

Used s/n range 5,420,000 to 5,969,999

Bolt 6528287-SA Heat lot A16

Used s/n range 5,900,000 to 5,999,000.

Bolt 6528287-SA Heat lot Z1

Used s/n range 5,800,000 to 5,900,000.

Bolt 658287-SA Heat lot Z2

Used s/n range 5,800,000 to 5,900,000.

Bolt 6528287-SA Heat lot Z3

Used s/n range 5,800,000 to 5,899,999.

Bolt 65287-SA heat lot Z-4-B

Used s/n range 6,080,000 to 6,009,000.

Bolt 6528287-SA Heat lot Y01

Used s/n range 5,790,000 to 6,009,000.

Bolt 6528287-SA heat lot Y02

Used s/n range 6,008,000 to 6,009,000.

Rear Sight Cover

Has ribs used throughout post war production.

Rear Sight Base

Unmarked Late Type

Used throughout post war production.

Elevation Pinion DRC

Used s/n range 4,200,000 to 4,300,000. Very Hard to find.

Elevation Pinion unmarked

Used s/n range 4,200,000 to 4,399,000

Elevation Pinion WCE yards

Elevation Pinion NHC

Used late 5 million and most of the 6 million serial numbered rifles

Windage Knob DRC

Used 4.2 million and most mid production.

Windage Knob SA

Windage Knob unmarked

Windage Knob WH/SA

Used late production 6 million serial numbers

Buttplate Springfield With Round or Square Plunger Head

Buttplate Screws Parkerized No Milling On Head

Buttplate Swivel

Stock Ferrule Screw Swadging Off Centered

Stock Ferrule Stamped With Large Hole And O Marked Center Inside