The first standardized long gun of the Spanish Army became the Model 1752, a musket proving typically conventional for the period. The weapon maintained a long service life under the Spanish crown and was deployed to its various frontline forces across the various Spanish holdings. The Model 1752 was in widespread circulation up until the middle of the 1850s by which time more and more fighting forces were adopting more modern "Minie ball" long guns (categorized as "rifled muskets").
The Model 1752 Musket featured design qualities associated with this period of land-based warfare - these were long, heavy guns made primarily with a single-piece wooden stock housing the metal barrel and works of the action. As muzzle-loading weapons, they were loaded down the muzzle end of the gun which necessitated use of a ramrod held in a channel under the barrel. The stock was affixed to the barrel at multiple points, usually two brass barrel bands and a cap at front. The action was of the flintlock method requiring a piece of flint rock to be seated in a vice and cocked rearwards prior to firing. Additional steps included the loading of gunpowder in the frizzen (pan) as well as gunpowder down the barrel prior to inserting the ball ammunition. The wooden stock incorporated a straight grip handle that was slightly angled downwards and extended to become the shoulder support (or shoulder stock). Sighting was through fixtures along the top of the weapon. The trigger was set within an oblong ring under the action as normal. The action was unique, known as the "Miquelet Lock", which reworked some of the accepted design practices of the flintlock action - mainly at the mainspring and hammer.
The pattern of 1752 was the original Spanish Army rifle and this was then followed by the patterns of 1755 ad 1757. At least 10,000 of the guns were sold to the Americans during the American Revolution (1775-1783), its independence war against the British Crown.