คงไม่ได้เห็นตัว Prototype นี้หรอกมํ๊งครับ
http://www.smallarmsreview.com/display.article.cfm?idarticles=1559 Remington Arms Rifle, Caliber .30, T22
A separate contract had been awarded to the Remington Arms Company to concurrently develop a select-fire version of the caliber .30 M1 designated as the T22. There were two Remington prototypes designated as the T23 and T24, which oddly preceded the T22 design. The T23 and T24 were M1 rifles designed to test Remingtons ideas for a select-fire weapon with both rifles using the M1s eight-round enbloc clip. The T23 used a fire control arrangement based on an independent hammer release system. The T24 version used an independent sear release system to achieve automatic fire from the M1. Both rifles were sent to the Ordnance Department for evaluation who then tabulated the results of their testing and passed them on to Remington for incorporation into the T22 rifle. Some of the desired features listed in Remingtons contract were: have select-fire capability, be equipped with a folding bipod, folding buttstock, the ability to launch grenades and have a magazine with a capacity of twenty rounds. The proposed weapon with all of the aforementioned features was to weigh no more than nine pounds. The standard issue M1 rifle weighed 9.5 pounds unloaded. The folding stock requirement was later dropped.
Remington Arms version of the select-fire M1, the T22, was also shipped to Aberdeen for testing. Both the T20 and T22 rifles far exceeded the original nine pound weight requirement. When the rifles were fired in the full-automatic mode they both operated from an open-bolt position. Magazine problems with both rifles were encountered. To ensure the consistent feeding of cartridges, an extremely strong magazine spring was required though it was feared such a strong spring would damage the cartridge follower. Another problem was the retention of the magazines floorplate, which would be difficult with a stiffer follower spring. Rather than attempt to redesign the magazine, John Garand addressed the problem by lengthening the receiver just .3125-inch. The alteration allowed for much better cartridge feeding, but would require a newly designed receiver, thus the idea was briefly rejected. The Aberdeen testing did prove that a select-fire rifle using the Garands basic M1 action was workable. There were modified versions of the Remington design designated as the T22E1, which featured an improved magazine release and bolt hold-open device and the T22E2 that incorporated an improved trigger group, gas cylinder, muzzle brake and bipod. Remingtons T22 series were originally favored by the Ordnance Department because the design readily lent itself to modifying existing M1 rifles during a rebuild program. The end of World War II terminated all of Remingtons work on the M1 rifle, while the Springfield Armory would continue its research and development.
One of the major challenges facing the personnel attempting to develop a select-fire M1 was that they were limited to only minor design changes. Any major redesigns would hamper the current production process of the M1, which was considered critical to the war effort.
