The Long Land Pattern

The most common musket during the French and Indian war for the British and their Yankee allies and still in use during the American Revolution was the Long Land Pattern. Sometimes called a 'Brown Bess', this term can't be documented before the 1770s though it's mention then seems to imply the term was already long in use by that time. Brown Bess wikipedia entry.

Rangers are known to have sawn 4 to 6 inches off the length (excavations at Rogers' Island prove this). Captured stocks of this musket found their way into the hands of Canadians and Indians after the fall of Oswego. Still in use at the beginning of the Revolution for British troops though gradually replaced by a shorter version, the Short Land Pattern.

The Redcoats' Brown Bess by George C Neumann

Replicas are available from many stockists including here