Pre-war production utilized questionable metallurgy. Some receivers constructed of single-heat-treated case-hardened steel were improperly subjected to excessive temperatures during the forging process. The carbon could be 'burnt' out of the steel producing a brittle receiver. Although several cases of serious injury from receiver failure were documented, the U.
Army never reported any fatalities. Many failures were attributed to use of incorrect cartridges, such as the 7. Pyrometers were installed in December to accurately measure temperatures during the forging process.
The change was made at approximately serial number , for rifles made at Springfield Armory and at serial number , at Rock Island Arsenal. Lower serial numbers are known as 'low-number' M rifles. Higher serial numbers are said to be 'double-heat-treated. Towards the end of the war, Springfield turned out the Model Mark I.
The Mark I has a cut on the left hand side of the receiver meant to act as an ejection port for the Pedersen Device, a modified sear and cutoff to operate the Pedersen Device; a specialized insert that replaced the bolt and allowed the user to fire. The stock was also slightly cut down on the left side to clear the ejection port. In all other respects, the Mark I is identical to the Temperature control during forging was improved prior to Mark I production.
The receiver alloy was toughened by addition of nickel after Mark I production. In , after experiencing the effect of long-range German 7. Army adopted the heavy grain boat-tail bullet for its. In service, the Springfield was generally prized for its reliability and accuracy, though some problems remained. The precision rear aperture sight was located too far from the eye for efficient use, and the narrow, unprotected front sight was both difficult to see in poor light and easily damaged.
The U. Marine Corps issued the Springfield with a sight hood to protect the front sight, along with a thicker front blade. Remington began production of the M in September , at serial number 3,,, using old tooling from the Rock Island Arsenal which had been in storage since The very early rifles are almost indistinguishable from made Rock Island rifles.
As the already worn tooling began to wear beyond use Remington began seeking Army approval for a continuously increasing number of changes and simplifications to both speed up manufacture and improve performance. The milled parts on the Remington M were gradually replaced with stamped parts until, at about serial number 3,,, the Army and Remington recognized that a new model name was appropriate.
Other features of the M, such as high-grade walnut stocks with finger grooves, were replaced with less expensive but serviceable substitutes. Most milled parts made by Remington were marked with an 'R'. M production was discontinued in favor of the MA3. The most noticeable visual difference in the MA3 was the replacement of the barrel-mounted rear sight with a smaller, simpler aperture rear sight mounted on the rear of the receiver; it was primarily adopted in order to speed familiarization by soldiers already trained on the M1 Garand, which had a similar sighting system.
However, the leaf spring providing tension to the elevation adjustment on the new aperture sight tended to weaken with continued use over time, causing the rifle to lose its preset range elevation setting. To speed production output, two-groove rifled barrels were adopted, and steel alloy specifications were relaxed under 'War Emergency Steel' criteria for both rifle actions and barrels. This later finish was also used on arsenal repaired weapons.
Much, if not all, World War II. If not removed by frequent and proper barrel cleaning these residues could cause pitting and excessive wear. In the jungle fighting on various Pacific islands cleaning was sometimes lax and the excessive moisture compounded the corrosive action of the residue.
Marines were initially armed with M rifles in early battles in the Pacific, such as the Battle of Guadalcanal, but the jungle battle environment generally favored self-loading rifles; [23] later Army units arriving to the island were armed with the M1 Garand. According to Bruce Canfield's encyclopedic U. However, some front-line infantry units in both the U. Army and Marine Corps retained Ms as infantry rifles beyond that date and continued to use them alongside the M1 Garand until the end of the Second World War in The Springfield remained in service for snipers using the MA4 , grenadiers using a spigot type rifle 22 mmgrenade launcher , and Marine Scout Sniper units.
So the answer is no NM being the first part of the serial number on a Springfield Armory pistol does not mean National Match. I'm sure that Springfield Armory has benefited from the confusion over the years.
Having said that, I own a couple of Springfield Armory 's and think that they are quality. That was and may still be the serial prefix applied to Springfield Armory s. Most were dressed up WW2 variants and competing with Colt. My Hardball Clark is built on one. Notify me of new posts via email. Duzuru 26 October popstar film stream Juzuru 30 April hindi full movie dhoom 3 Views: Likes: Share this: Twitter Facebook. Like this: Like Loading Previous Post Previous post: Transporter 4 movie actress free pdf.
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When and where was your Springfield Armory Model serial number manufactured and what is its approximate value? What year ded they make us springfield armory model with the serial number of ? What is the manufacture date of the Springfield m1 garand rifle serial number ?
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