回答: 那你去看正规的红外夜视器材和配套轻武器发展资料， 由 大鹦鹉 于 2022-01-22 11:49

长津湖战役是1950年11月底，如果这个资料上写的是"began in 1951", "About 20,000 of these scope sets were made in 1951", 懂点英文的都能明白的。事实不是，你仔细读一下下面的你自己找的资料： 6park.com
Mass production of a greatly improved infrared night vision system began in 1950 with the “20,000 volt Set No. 1”. This could be mounted on any M1 or M2 carbine, making it a “M3 Carbine.”  About 20,000 of these scope sets were made in 1950-1951, and they were used during the Korean War and remained in inventory until the mid-1960s. 6park.com
很显然你是视而不见，光想着找资料，根本没好好读。