What has been considered the most widely used weapon (firearm) of the US Civil War?

Specifically, in the Civil War, the Springfield Model 1861 has been considered the most widely used rifle (weapon) of the civil war. The Springfield Rifle cost $20 each at the Springfield Armory where they were officially made. Overwhelmed by the demand, the armory opened its weapons patterns up to twenty private contractors. Over 1,000,000 Model 1861 rifles were produced according to records of the U.S. Army. The number of Model 1861 muskets produced by the Springfield Armory was 265,129 between January 1, 1861 and December 31, 1863. Also, one should note that the Enfield 1853 rifled musket, which was used by both the North and the South in the Civil War, was the second most widely used infantry weapon in the war.

Many weapons were used in the U.S. Civil War from knives to swords along with a variety of firearms, including rifles, pistols, muskets, and repeating weapons. Some of the new weapon technologies used in the civil war include rifled gun barrels, the Minie ball and repeating rifles. Several popular rifles used in the civil war include the Springfield, the Enfield, the Lorenz, the Sharps and the Colt revolving rifle.