The component parts of the musket are all made according to one precise pattern, and thus when taken up at random they are sure to come properly together. There is no individual fitting required in each particular case. Any barrel will fit into any stock, and a screw designed for a particular plate or band, will enter the proper hole in any plate or band of a hundred thousand. There are many advantages which result from this precise conformity to an established pattern in the components of the musket. In the first place the work of manufacturing it is more easily performed in this way. It is always the tendency of machinery to produce similarity in its results, and thus although where only two things are to be made it is very difficult to get them alike, the case is very different where there is a call for two hundred thousand. In this last case it is far easier and cheaper to have them alike than to have them different; for in manufacturing on such a scale a machinery is employed, which results in fashioning every one of its products on the precise model to which the inventor adapted the construction of it. Then, besides, a great convenience and economy results from this identity of form in the component parts of the musket, when the arms are employed in service. Spare screws, locks, bands, springs, &c., can be furnished in quantities, and sent to any remote part of the country wherever they are required; so that when any part of a soldier's gun becomes injured or broken, its place can be immediately supplied by a new piece, which is sure to fit as perfectly into the vacancy as the original occupant. Even after a battle there is nothing to prevent the surviving soldiers from making up themselves, out of a hundred broken and dismantled muskets, fifty good ones as complete and sound as ever, by rejecting what is damaged, and assembling the uninjured parts anew. To facilitate such operations as these the mechanism by which the various parts of the musket are attached to each other and secured in their places, is studiously contrived with a view to facilitating in the highest degree the taking of them apart, and putting them together. Each soldier to whom a musket is served is provided with a little tool, which, though very simple in its construction, consists of several parts and is adapted to the performance of several functions. With the assistance of this tool the soldier sitting on the bank by the roadside, at a pause in the middle of his march, if the regulations of the service would allow him to do so, might separate his gun into its forty-seven components, and spread the parts out upon the grass around him. Then if any part was doubtful he could examine it. If any was broken he could replace it--and after having finished his inspection he could reconstruct the mechanism, and march on as before.