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It served with distinction in WWII, Korea, and even Vietnam. The M1903A4 is a legendary classic sniper rifle. The rifle was again used in the Korean conflict, and even in the early stages of the Vietnam conflict when sniper rifles were in severe shortage. From its adoption in 1943 until the end of the war, the M1903-A4 was used extensively in every theater of operation by both the US Army and the USMC.
![unertl scope unertl scope](https://i.imgur.com/zGw0sJX.jpg)
The M1903-A4 was an accurate rifle with an effective range of about 600 yards (550m), with the main limit on long range accuracy coming from its very low power scope (2.5x). The rifle was officially adopted on as the M1903-A4 (sniper). The Infantry Board and the Ordanance Department conducted an evaluation and recommended that the Weaver 2.5x 330C hunting telescope be adopted for use on M1903 and M1903-A1 rifles. There was a high demand, that could not be filled, for telescopic (sniper) rifles. The M1903-A4 was a specifically designed sniper rifle that came as a result of early U.S.
![unertl scope unertl scope](http://thefirearmsforum.s3.amazonaws.com/2014/04/152929_de365da8223d6d9b555b77de709f9d34.jpg)