"most" would be correct...
I did some reading on the 7.62 Garand. They did barrel some of them in 7.62 x 51 but not a lot....
U.S. Army Designation U.S. Navy Designation Description
M1E1 N/A M1 Garand variant; w/ modified cam angle in op-rod
M1E2 N/A M1 Garand variant; w/ prismatic scope and mount
M1E3 N/A M1 Garand variant; w/ roller added to bolt’s cam lug (later adapted for use in the M14)
M1E4 N/A M1 Garand variant; gas cut-off and expansion system w/ piston integral to op-rod
M1E5 N/A M1 Garand variant; 18-inch barrel and folding stock
M1E6 N/A M1 Garand variant; sniper variant
M1E7/M1C N/A M1E6 Garand variant; sniper variant w/ M81 scope (though the M82 or M84 scope could be used) on a Griffin and Howe mount
M1E8/M1D N/A M1E7 Garand variant; sniper variant w/ M82 scope (though the M84 scope could be used) on a Springfield Armory mount
M1E9 N/A M1 Garand variant; similar to M1E4, w/ piston separate from op-rod
M1E10 N/A M1 Garand variant; variant with the “Ljungman” direct gas system
M1E11 N/A M1 Garand variant; short-stroke Tappet gas system
M1E12 N/A M1 Garand variant; gas impingement system
M1E13 N/A M1 Garand variant; “White” gas cut-off and expansion system
M1E14 Mk 2 Mod 0 M1 Garand variant; rechambered in .30 T65/7.62 × 51 mm NATO w/ press-in chamber insert
T20 N/A M1 Garand variant; select-fire conversion by John Garand, capable of using BAR magazines
T20E1 N/A T20 variant; uses its own type of magazines
T20E2 N/A T20 variant; E2 magazines will work in BAR, but not the reverse
T20E2HB N/A T20E2 variant; HBAR variant
T22 N/A M1 Garand variant; select-fire conversion by Remington, magazine-fed
T22E1 N/A T22 variant; unknown differences
T22E2 N/A T22 variant; unknown differences
T22E3 N/A T22 variant; unknown differences; uses T27 fire control
T26 N/A M1 Garand variant; 18-inch barrel and standard stock
T27 N/A Remington field select-fire conversion for M1 Garand; ability to convert issue M1 Garands to select-fire rifles; fire control setup used in T22E3
T35 Mk 2 Mod 2 M1 Garand variant; rebarreled for .30 T65/7.62 × 51 mm NATO
T36 N/A T20E2 variant; T20E2 rechambered for .30 T65/7.62 × 51 mm NATO using T35 barrel and T25 magazine
T37 N/A T36 variant; same as T36, except in gas port location
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Descendants
As stated earlier, the M1 Garand was the direct predecessor of the M14 rifle that replaced it. Beretta used their manufacturing knowledge to develop several variants similar to the M14 but more closely based on the M1 Garand, and Ruger produced the Mini-14 rifle, which utilizes a reduced-size operating system and a different gas system. The AK-47 also utilizes the M1 Garand bolt and locking system: the Kalashnikov team simply placed the operating rod on top of the barrel rather than underneath. The AK-47 also uses a highly simplified form of the Garand trigger group. Thus, it appears that the Russian design was heavily influenced by the success of the American weapon.
Despite similarities in naming, there is no relationship between the M1 Garand and the M1 Carbine. Additional confusion may come from the adoption of several other "M1" weapons, such as the M1 Thompson submachine gun and M1 Abrams tank.
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Civilian use
United States citizens meeting certain qualifications may purchase U.S. Military surplus M1 Garand rifles through the Civilian Marksmanship Program (CMP), a not-for-profit corporation created by Congress in the early part of the 20th century to promote rifle skills in case of future war. Recently, the CMP has branched out to promote firearms safety training and competition. Military surplus Garands and post-war copies made for the civilian market are popular among enthusiasts.
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Misconceptions
One of the most widespread myths concerning the Garand rifle is that its "en-bloc" clips could not be ejected by any other means except shooting the rifle until all ammunition was expended. As mentioned earlier, partially or completely loaded clips could be ejected relatively easily from the rifle. However, many may argue that this portrayal is more or less correct, since the "clip latch" reload was usually not done in the battlefield (also noted earlier).
Dont take this as gospel, it may be in-accurate in some accounts.
Country United States of America
Type Service rifle
Inventor John C. Garand
Date of design 1924
Service duration 1936–1957
Cartridge .30-06 Springfield (7.62 × 63 mm),
.276 Pedersen,
7.62 × 51 mm NATO (U.S. Navy)
Action Gas-operated, rotating bolt
Rate of fire Semi-automatic
Muzzle velocity 865 m/s (2,837 ft/s)
Effective range 550 m (601 yd)
Weight (unloaded) 4.3 kg (9 lb 10 oz)
Length 1,100 mm (43.6 in)
Barrel length 610 mm (24 in)
Feed system 8-round "en-bloc" clip (.30-06);
10-round "en-bloc" clip (.276)
Sights Aperture rear sight, barleycorn-type front sight
Variants M1C/D sniper rifle
Number built 5.4 million approx.