The Brunswick rifle was a .704 calibre muzzle-loading percussion rifle manufactured for the British Army at the Royal Small Arms Factory at Enfield in the early 1800s. The weapon was introduced to replace the Baker rifle and weighed from over 9 to over 10 pounds without its bayonet attached, depending on the pattern. The weapon was described as inaccurate and difficult to load but remained in production for about 50 years (1836 to 1885) and was used in both England and assorted colonies and outposts throughout the world.

The Brunswick had a two groove barrel designed to accept a "belted" round ball. There are four basic variants of the British Brunswick Rifle (produced in .654 and .704 calibre, both oval bore rifled and smoothbore). They are the Pattern 1836, the Pattern 1841 , the Pattern 1848 and the Pattern 1840 Variant.