The 1728 is correct in every detail to the original  This model saw action during the French and Indian war 1754 - 1762, most of the 1728 models were made in St Etienne, and it is therefore is sometimes known as the St Etienne musket. 
The overall length of this musket is 63" (1600mm) 
The barrel is 41" (1041mm) barrel in .69 Calibre 
 Weighs approx. 10lbs (4.53 kg)