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USRIFLECAL30M1.com M1 Garand Components Listing by Part Group

* All dates and serial numbers are approximate *

USRIFLECAL30M1.COM M1 Garand Components List
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MFGComponentDrawing NumberHeat Lot/TypeDate RangeSerial# RangeNotes
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HRAAperatureB8868-1Type 3January/1953 to December/19564660001 - 6034729Late version. Squared ramp shoulders below aperature disk. Wide tracks (0.085 inches wide). Edges of aperture disk smoothly finished.
HRAElevating PinionN/AType 4January/1953 to December/19564660001 - 6034729Postwar with 8-36NF thread, no locking bar
HRAElevation KnobN/AType 2January/1953 to December/19564660001 - 6034729Postwar, integral part of pinion, may be marked "HRA-W" or "HRA".
HRAFront SiteB147427Type 3AJanuary/1953 to December/19564660001 - 60342790.687 width at blades.
HRAFront Site ScrewN/AType 3January/1953 to December/19564660001 - 6034729Non-rebated head. Head may be smooth or knurled.
HRARear Sight BaseC46001Type 2January/1953 to December/19564660001 - 6034729Unmarked.
HRARear Sight CoverB8872N/AJanuary/1953 to December/19564660001 - 6034729Similar to Type 2 SA. Indentations struck deeper.
HRARear Sight Lock NutN/AType 3January/1953 to December/19564660000 - 6034729Windage knob nut.
IHCAperatureB8868-1Type 3January/1953 to December/19564400000 - 5278245Late version. Squared ramp shoulders below aperature disk. Wide tracks (0.085 inches wide). Edges of aperture disk smoothly finished.
IHCElevating PinionN/AType 4January/1953 to December/19564400000 - 5278245Postwar with 8-36NF thread, no locking bar
IHCElevation KnobN/AType 2January/1953 to December/19564400000 - 5278245Postwar, integral part of pinion, may be marked "IHC DRC".
IHCFront SiteB147427Type 3CJanuary/1953 to December/19564400000 - 52782450.875 inches wide at blades. Widest of all manufactured.
IHCFront Site ScrewN/AType 3January/1953 to December/19564400000 - 5278245Non-rebated head. Head may be smooth or knurled.
IHCRear Sight BaseC46001Type 2January/1953 to December/19564400000 - 5278245may be stamped "A" or "C"
IHCRear Sight CoverB8872N/AJanuary/1953 to December/19564400000 - 5278245Similar to Type 2 SA.
IHCRear Sight Lock NutN/AType 3January/1953 to December/19564400000 - 5278245Windage knob nut.
SAAperatureB8868-1Type 1January/1936 to November/19391 - 20000Gas trap, no tracks on bottom surface on either side of the teeth. Drawing number "B8868-1" stamped on upper curved surface.
SAAperatureB8868-1Type 2November/1939 to February/194020000 - 28000No tracks on the bottom of either side of the teeth and drawing number omitted.
SAAperatureB8868-1Type 3-1February/1940 to December/195728000 - 6100500Early version. Rounded ramp shoulders below aperature disk. Narrow tracks (0.065 inches wide).
SAAperatureB8868-1Type 3-2February/1940 to December/195728000 - 6100500Late version. Squared ramp shoulders below aperature disk. Wide tracks (0.085 inches wide). Edges of aperture disk smoothly finished.
SAAperatureB8868-1Type 4/5December/0 to December/00 - 0NM. Part#s 7268110(0.0520 inch peep hole) and 7268109(0.0595 inch peep hole). Type 5 was the hooded NM version.
SAElevating PinionN/AType 1January/1936 to March/19421 - 540000Short with 6-40NF thread, with flush nut. Early examples (to circa 46,000-47,00) were marked inside with the part number.
SAElevating PinionN/AType 2March/1942 to November/1942540000 - 1000000Short, same as Type 1 but with locking bar substituted for flush nut, 6-40NF thread.
SAElevating PinionN/AType 3August/1942 to June/1945800000 - 3800000Long with 8-36 NF thread, with locking bar.
SAElevating PinionN/AType 4June/1945 to December/19573800001 - 6100500Postwar with 8-36NF thread, no locking bar
SAElevation KnobN/AType 1AJanuary/1936 to July/19401 - 47000Part number inside, checkered rim with closed arrowheads.
SAElevation KnobN/AType 1BJune/1940 to September/194246000 - 850000No part number, checkered rim with closed arrowheads.
SAElevation KnobN/AType 1CSeptember/1942 to October/1945850000 - 3888081Knurled rim, closed arrowheads.
SAElevation KnobN/AType 2January/1952 to December/19574206000 - 6099905Postwar, integral part of pinion. May be marked "SA" in late 1950s+
SAFront SiteB147427Type 3AJuly/1940 to December/195750001 - 6100500Between 0.625 and 0.687 inches wide at blades. Smaller dimension usually associated with WWII.
SAFront SiteB8882Type 2AJanuary/1936 to July/194081 - 50000Straight guard blades. Front site blades not rounded, rear of blade is quarter circle shaped. No vertical slot it guard blade.
SAFront SiteB8882Type 2BJanuary/1936 to July/194081 - 50000Flared guard blades. Front site blades not rounded, rear of blade is quarter circle shaped. No vertical slot it guard blade.
SAFront SiteUnknownType 1January/1936 to January/19361 - 80Single blade without guards, gas trap pre production rifles only.
SAFront Site ScrewN/AType 1January/1936 to July/19401 - 50000Gas Traps only.
SAFront Site ScrewN/AType 2July/1940 to February/194350001 - 1360000Rebated Allen socked head, used with seal.
SAFront Site ScrewN/AType 3March/1943 to December/19571360001 - 6100500Non-rebated head. Head may be smooth or knurled.
SARear Sight BaseC46001Type 1AJanuary/1936 to January/19401 - 25000"C46001" stamped on the flat underside, machined with a rounded area behind hole for elevation/windage knob shaft.
SARear Sight BaseC46001Type 1BJanuary/1940 to October/194025000 - 75000No "C46001" stamped on the flat underside, machined with a rounded area behind hole for elevation/windage knob shaft.
SARear Sight BaseC46001Type 2October/1940 to December/195775001 - 6100500No "C46001" stamped on the flat underside, machined with a "squared" off area behind hole for elevation/windage knob shaft. No concentric ring around hole for elevation pinion/windage knob assembly.
SARear Sight CoverB8872Type 1AAugust/1937 to April/193981 - 10000Smooth, no reinforcing indentations along top and sides. Was marked "B-8872".
SARear Sight CoverB8872Type 1BApril/1939 to November/193910000 - 20000Smooth, no reinforcing indentations along top of sides. Was marked "B-8872".
SARear Sight CoverB8872Type 1CNovember/1939 to July/194020000 - 50000Smooth, no reinforcing indentations along top and sides. Was marked "8872".
SARear Sight CoverB8872Type 1DJuly/1940 to December/194050000 - 95000Smooth, no reinforcing indentations along top and sides. Not marked.
SARear Sight CoverB8872Type 2December/1940 to December/195795001 - 6100500No drawing number marked. Reinforcing indentations on top and edges.
SARear Sight Lock NutN/AType 1January/1936 to March/19421 - 530000Flush nut, short pinion, 6-40NF thread
SARear Sight Lock NutN/AType 2AMarch/1942 to November/1942530001 - 1000000Locking bar, short pinion, 6-40NF thread, with rounded ends and rounded binding ridges.
SARear Sight Lock NutN/AType 2BNovember/1942 to January/19441000001 - 2500000Locking bar, long pinion, 8-36NF thread, with rounded ends and rounded binding ridges.
SARear Sight Lock NutN/AType 2CJanuary/1944 to October/19452500001 - 3890000Locking bar, long pinion, 8-36NF thread, with squared ends and squared binding ridges.
SARear Sight Lock NutN/AType 3January/1952 to December/19574206000 - 6100500Windage knob nut, no locking bar, 8-36NF thread with square ends and square binding ridge.
WRAAperatureB8868-1Type 1December/1940 to January/1945100101 - 2540999Parkerized stamped steel. May have punch mark on bottom surface. 60 degree crosshatch pattern on face. No tracks on either side of gear.


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