Choate Machine and Tool has a light weight nylon polymer folding stock, telescoping stock, pistol gripped standard stock, and even a ventilated handguard.
Once a company invested in tooling, materials, etc., to manufacture the barrel who would buy a M1 Carbine with a flash hider? How many would they sell?
What stock would sell better than a replica Paratrooper stock?
What niche would the 5.7 Johnson fill that can’t be filled with other calibers? IAI made them for a while, but they did not sell well enough to continue producing them.
An original configuration M1 Carbine is desirable to most people who are interested in the carbines. If someone wanted a lighter faster round, they would buy a different carbine in .223 Remington or .22 Magnum.
Everything except weight and envelope size. I’ve always felt a chopped M1 Carbine with a decent collapsible & folding stock in a hotter chambering would make for a great little HD & truck gun, especially for smaller statured shooters.
Many tend to forget the light handy rifles the M16/SP1 and XM177/CAR15 were before they morphed into the pigs they are today. What you propose might have made sense when you could get Carbines for half or less than a AR but today good serviceable M1’s are expensive, modding them will be expensive, ergonomics are not as good, power is not as good, mags are not as good and AR’s just make more sense. Instead of chopping up a Carbine to make a poor substitute for a CAR I would enjoy it for what it is a fun piece of history like the Garand, still effective within it limitations but outclassed by more modern designs.
The M1 carbine makes a lot of sense with an 18" barrel, walnut stock, Ultimak with AP Micro, and WML for those living in ban states who don’t want to deal with neutered ARs.
The trouble is that, as far as I can tell, modern production M1s - and even old military M1s - simply are not that reliable.
Real unaltered m1 carbines are no longer readily available. Butchering one to accommodate your configuration would be criminal. However, newly manufactured ones like the old iver Johnson’s would be fair game. All of the m1 type rifles and carbines are not ideal for optics. Something your configuration would beg for is a red dot. 30 m1 carbine with good hollow points is respectable.
I had a milsurp Inland that was 100% reliable, once I changed out all the springs with a Wolff kit. I really didn’t need it, but $157 through the SO with 3 mags was impossible to pass up. The neighbors kids LOVED shooting it when they were youngsters.
I have 3 M1 Carbines - from bottom to top, a Rock-Ola, National Postal Meter and an Inland. The NPM appears to have all original parts except for the rear sight and the stock was refinished. The other two are typical mix-masters after post WWIII re-build. All three fire flawlessly - have never had a malfunction with any of them.
According to the last Garand Collector’s Association journal, it appears that a substantial number of them are en-route from Korea to the CMP so there should be a bunch hitting the market in the coming year or so.
Milsurps were but commercial were always 50/50. Some very early commercial carbines used mostly USGI parts and we’re pretty good but as parts dried up quality went down. Kinda like with the M14/M1A1
I had the exact same experience shooting the CMP short course with a surplus Inland the way he did when he only got a bronze, which is to say multiple failures to feed during the rapid fire string. I still managed to place 2nd overall out of 22 shooters in spite of the malfs, just managing to get all my rounds downrange before the targets turned. Oh, and I was the only one not shooting a Garand!
As I stated, I swapped out every spring in the 60 year old gun AND magazines with current production Wollf springs and never suffered another malf again. Problem solved. I simply wouldn’t purchase a reproduction carbine, period.
Years ago it was popular to chop the barrel and install an l1a1 flash suppressor. Ugly then and ugly now. The carbine is a beautiful and fun gun. Just the way they are!