The M2 sniper scope extended the helpful nighttime range with the M3 carbine to a hundred yd (ninety one m). From the afterwards stages on the Korean War, an improved Model on the M3 carbine, with a revised mount, a forward pistol grip, in addition to a new M3 sniperscope https://daltonpgtep.thezenweb.com/the-basic-principles-of-springfield-armory-m1a-standard-72653507