As mine is. I think Underwood had the best results fulfilling their contracts, and actually made parts, including barrels, for other manufacturers. Making semi precision parts pre-war, i.e., typewriters, probably didn't hurt.As long as the M1 Carbine rifle was built by Underwood as well then there should be no issues.
I have never understood the dismissal of the 30 carbine as a defensive round. Its basic ballistics of 110gr at 2000 feet per second means that at 100 yards it has similar ballistics to the famous "manstopper" 110gr 357 magnum rounds at the muzzle. Of course, it is a smaller diameter bullet, so the comparision is not completely equal, but the energy is there.
With the 30 caliber round, the bullet construction and performance is very critical, so I will be interested to hear more about the rounds described in this thread.
A lot of it could be based on alleged lack of “stopping power” with military ball ammo.
I think more of it has to do with the American “more is better, most is best” mentality. Since the M1 carbine is a long gun, people inevitably compare its on paper ballistics to high pressure bottleneck cartridges, even though it was never intended to compete with such rounds. It’s supposed to bridge the gap between the portability of a handgun and the accuracy/terminal performance of a full size battle rifle.
Cue the AR fanatics to simply repeatedly shout the word “AR” while also blasting Nickelback and ording UFC tickets