Sad to see an old warrior chopped up like that.
A lot of Airmen, including me, learned to shoot double action with an M15. I used and shot many M15s during my 8 years in the AF SP. When going to work at one of the indoor posts, we got an M15 with 6 loose rounds from the armory along with 12 rounds of 38 ammo in dump pouches. I think they were 130 grain round nose. Our range guys (CATM) said the 38s were hot loaded, and it felt kind of like +P when we qualified.
It's a real shame that a revolver with it's history, doing it's small part keeping America safe, had to be treated to the big government crusher to make us "safer". These wonderful guns burned through a lot of ammo, with the SPs, Aircrews, OSI, etc, shooting the snot out of them and using them for 20+ years. They were very accurate and held up great, only to be crushed after many years of service.........