That's a great little weapon. The muzzle energy is right up there with a .357 Magnum, and expanding bullets really help deliver that to the target (there was an NYPD stakeout specialist who swore by his carbine, for quickly ending gun fights ;>). And they tend to be reliable little beasts: I've read that after we left Vietnam, a bunch of anti-communists we left behind (Hmong? Montagnards?) headed for Thailand on foot. They were armed mostly with M16s, AKs, and M1/M2 carbines, but the carbines survived the year-long journey better than the other rifles...
FYI. Benjamin “Bugsey” Siegel was shot through the eyes with an M1 Carbine.