Per Flayderman's Guide, the total of these rifles manufactured is estimated to be "less than 50 and very probably less than 20." The number that survive is fewer still, and the number that survive in this high level of condition could probably be counted on one hand with fingers to spare. It is essentially the same as the Wesson & Leavitt Dragoon revolvers manufactured by the Massachusetts Arms Co. at the beginning of the 1850s but with a rifle length barrel and an integral buttstock as part of the grip. The pistol grip stock is carved in a way that makes the butt look like it is detachable, but it is one piece, and it is fitted with a steel buttplate. The two-stage, rifled barrel has a brass blade front sight. The top strap has "MASS. ARMS CO./CHICOPEE FALLS." "NOV. 26 1850" is marked on the barrel latch. The lug/barb is numbered "56" on the back, and "56" is also on the front face of the cylinder pin. The face of the recoil shield is numbered "16." The Leavitt pattern marking is on the rear face of the cylinder, and the Wesson patent marking is on the rotating plate. The lock is marked "WESSON'S & LEAVITT'S PATENT."