i thought about using a round piece of tube steel for an upper receiver, so that i could use an extended portion, vented out and used as a handguard/shroud.... the way i set up the recoil spring stop was a plug in the end, pull, twist, release and the spring and carrier comes out...adding a lower receiver for the fire control group, and a wooden stock and it came out looking like a russian PPSH
i also have the idea of taking a .223 round, chopping it before the shoulder and use as rimless 357 magnum brass... necking it down (or leaving it straightwall) i would fit it with a pointed rifle bullet so out of the rifle, it would have more range/power than .223, while still being a pistol round (for logistics purposes of only having to buy one type of ammo)
some other ideas i had, just for the added simplicity was to go with a rolled delayed blowback system like the HK family of rifles because i wanted the recoil to be in-line with the barrel and stock, to reduce the overall felt recoil and muzzle flip... ive thought about ways to make a gas piston in-line with the barrel by using a cylinder shaped piston that would fit over, and ride on the barrel with a few smaller gas ports around the barrel rather than one bigger one...
those are just some of the ideas i had... you cant really design anything in this detail on a bolt action anymore, because anything you could have designed is already out there and in production, theres just no more territory left.. and i decide on semi automatic, because i just fail to see any practical use for fully even for military use (unless its belt fed).... so straight up semi for my design... never hurt the garand any
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