1 (1962) Change extractor rod to LH thread, eliminate screw in front of trigger guard It has an alloy cylinder and will be a 5 screw design with 4 sideplate screws and a screw in front of the trigger guard. Pre-Model 12 – predates model number markings. The final version, the Model 12-4, used the standard frame dimension of the other K-frames. The Model 12 variants 12-1, 12-2, and 12-3 used a narrower hammer and had an aluminum grip frame that was 0.08-inch (2.0 mm) narrower than the standard steel K-frame. 38 Special cartridges, and in 1954, S&W changed over all new production Airweight revolver cylinders to steel, increasing the weight to 18 ounces. The aluminum cylinder proved insufficiently strong to withstand continued firing with standard. The Military & Police Airweight initially used both an aluminum cylinder and frame, and weighed only 14.5 ounces. This designation was changed in 1957 to the Model 12 Airweight. However, after continued negative reports, Air Force officials decided that the revolvers were not suitable for issue, and the model was withdrawn from service, all but a few examples being crushed or destroyed.Ī civilian model of the M13 was released in 1953, called the Military & Police Airweight. 38 cartridge for the weapons – the Caliber. After persistent reports on cylinder and frame failure with the M13 and its counterpart, the Colt Aircrewman, the Air Force attempted to remedy the issue by issuing a dedicated low-pressure. Some 40,000 Smith & Wesson M13 revolvers were produced. In 1953, the United States Air Force (USAF) ordered a variant of the S&W Military & Police Airweight with a two-inch barrel and aluminum cylinder to be issued to US Air Force flight crew members, called the Revolver, Lightweight, Caliber.
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