First Korean War era USMC M3 evening eyesight scope The M3 carbine was an M2 carbine fitted using a mount designed to take an infrared sight to be used at nighttime. It had been originally utilized Using the M1 sniperscope, and an Energetic infrared sight, and saw action in 1945 https://cesarqdpep.mappywiki.com/1458375/the_springfield_armory_m1a_standard_diaries