The Model 1840 flintlock musket was produced at Springfield Armory.
 The .69 caliber musket had a 42" barrel, an overall length of 58", and a weight of 9.8 lbs.
 More than 30,000 were produced by the Springfield Armory and two independent contractors between 1840 and 1846.
The Springfield Model 1812 Musket is a .69 caliber, flintlock musket produced by the Springfield Armory.
Springfield musket may refer to any one of several types of small arms produced by the Springfield Armory in Springfield, Massachusetts, for the United States armed forces.
 In modern times, these muskets are commonly referred to by their date of design followed by the name Springfield ("1855 Springfield", for example).
 However, U.S. Ordnance Department documentation at the time did not use "Springfield" in the name ("Rifle Musket, Model 1855", for example).
The Springfield Model 1863 rifled musket is a .58 caliber rifled musket produced by the Springfield Armory between 1863 and 1865.
The Springfield Model 1886 Carbine was Springfield Armory's second attempt to create a single rifle that would satisfy the needs of the infantry, cavalry, and artillery (the first attempt being the Springfield Model 1882 Short Rifle).
 It is one of several models of "Trapdoor Springfield" rifles.
The Springfield Model 1865 was an early breech-loading rifle manufactured by U.S. Armory in Springfield, Massachusetts.
 It was a modification of the Springfield rifled musket Model 1861.
 It was later replaced with the Model 1866.
The Springfield Model 1822 Musket is a .69 caliber, flintlock musket produced by the Springfield Armory.
The Springfield Model 1861 was a Minié-type rifled musket shoulder-arm used by the United States Army and Marine Corps during the American Civil War.
 Commonly referred to as the "Springfield" (after its original place of production, Springfield, Massachusetts), it was the most widely used U.S. Army weapon during the Civil War, favored for its range, accuracy, and reliability.
The Springfield Armory, located in the city of Springfield, Massachusetts, was the primary center for the manufacture of U.S. military firearms from 1777 until its closing in 1968.
 The site is preserved as the Springfield Armory National Historic Site, Western Massachusetts' only unit of the national park system.
 It features the world's largest collection of historic American firearms.
The Springfield model 1870 was one of several model "trapdoor Springfields", which used the trapdoor breechblock design developed by Erskine S. Allin.
 The model 1870 was a minor improvement to the Springfield Model 1868, and retained most of the Model 1868's features.

Question: Which armory features the world's largest collection of historical American firearms and produced the Springfield Model 1812 Musket?
Answer: The Springfield Armory