i will have to look and see which manufacturer it was... i used to know but ( old age thing). OH the thing is freaking accurate...i love the peep site. no problem hitting want i was aiming at. i got the GI leather M1 Garand sling....held it like i would a machinegun to keep muzzle climb down, etc. everybody and their brother was making firearms in WW2. you have winchester, remington, H&R, like you would image but anyone who had a machine shop and could mill recievers got into the action. places like international harvester, general motors, singer sewing machine...and a slew i cant recall made garands, carbines, BARS.... some of the really off brands are valuable collectors items. I sold a ton of them ( carbines and garands) in the mid 80s when tons of lend/lease equipment came back from asia and central/south america. some were pretty good shape some werent. they were graded...but they stripped them and threw them in a vat of phosphate (rifling and all) so they didnt have that nice parkerized finish. but they sold for $150 to $200. ah the good old days!!!!