Staff Writer (Updated: 4/13/2016):
The new Beretta weapon was primarily chambered for the 7.65x17mm Browning SR cartridge and was followed by the limited-run 9x19mm Glisenti Short chambering thereafter. The primary 7.65mm-chambered sidearm relied on a simple blowback design consistent with handguns of these calibers while 9mm marks brought about use of revised and strengthened internals to handle their heavier cartridge loads. Overall design was quite conventional including a fixed grip handle, solid trigger surrounded by a strong ring and slab-sided slide. The slide contained the front and rear iron sights as well as a top-mounted ejection port with grips at the rear for proper management. A forward portion of the slide was also cutaway in true Beretta fashion (this design feature continuing in the modern Model 92). Barrel protrusion was minimal at the muzzle. The slide remained open following the firing of the final cartridge in the magazine to which a new magazine was inserted into the base of the grip as usual - each detachable box holding up to eight cartridges in a spring-loaded design. As the Browning and Glisenti cartridges were generally similar (save for their charge), ammunition counts between the two types did not vary in the standard magazine.
Production of Model 1915 pistols ranged from 1915 into 1945 which allowed them to appear in formidable numbers throughout World War 1 and World War 2. The line was improved through the newer "Model 1915/19" model of 1919 and these were given extended slide cutaways (to incorporate the ejection port in its reach) and revised safety catches. A longer barrel was instituted though the design still came in shorter than the preceding mark. The wooden grip panels of old were replaced by sheet metal types to help lower production costs at the expense of some comfort. Some Model 1915/19 marks were inducted into the Italian Army in 1922 as the "Model 1922" and these were chambered for the 7.65x17mm Browning SR cartridge. Both the Model 1915 and Model 1922 eventually led to the more refined Model 1923 and its 9x19mm Glisenti chambering. Very few of this Beretta model were made.