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The .22 TCM or 22TCM (.22, Tuason, Craig, Micromagnum) is a proprietary bottle-necked rimless cartridge created from a 5.56mm NATO / 223 Rem parent case. It was developed by custom gunsmith Fred Craig and Martin Tuason, President of Rock Island Armory (RIA) Armscor, and is used in the RIA M1911 pistols and the M22 TCM bolt-action rifle.
It was originally named the MMJ 5.7mm [1] by its designer and is also known in the U.S. as the 5.7mm Johnson, the Johnson MMJ 5.7mm Spitfire, and the .22 Johnson, (or 5.7×33mm internationally). In 1963, Melvin M. Johnson developed a conversion of the M1 Carbine (by either relining or re-barreling the M1 Carbine ) to a .224 caliber bore, using ...
Armscor introduced a new proprietary caliber named the .22 TCM (Tuason Craig Micromag) based on the 1911 pistol. The cartridge is essentially a 5.56×45mm NATO cartridge shortened to 1.265 in. total length with a 40-grain jacketed hollow point bullet. Its main characteristics are its high velocity and low recoil, allowing for repeated accurate ...
The 7 mm version first appeared around 1980, with the .25 caliber appearing in 1987. The larger calibers provide more downrange energy, and resist wind deflection better than the original .22 caliber (5.56mm) bullet, and the moderate case capacity of the .223 Remington works well in the short pistol barrels. [1]
Developed jointly by Remington and Smith & Wesson, it was to be used in the Model 53 revolver, which first appeared late in 1961. [3] While it traced its origins to potent wildcats such as the .224 Harvey Kay-Chuk, [4] which ultimately derive from the .22 Hornet, [4] it was a bottlenecked cartridge based upon the .357 Magnum case necked down to a .22 caliber bullet, with an unusually long ...
During development a version based upon the 9x19 Parabellum case was also evaluated, which carried the significant advantage of being able to be utilized in pre-existing NATO standard 9x19 Parabellum caliber firearms by means of a relatively cheap barrel and caliber swap. [1] The 22 TCM takes advantage of this same concept in its sub-variant ...
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.22 caliber barrel liner, spring, and fasterners .22 LR: A mostly printed .22 LR pistol. Uses a DIY metal barrel, firing pin, and spring. Simple and extremely cheap, designed to cost $5-$8. Commonly created to be sold at gun buybacks for profit. [34] A large number of remixes and variants of this design have been created. The Urutau [35] 2024 ...