I got a crazy idea that never should have worked. Small primer 45acp brass is becoming more and more common and may eventually become the norm I figured it's time to test small rifle primers in the 1911. Not just standard small rifle. I got some new winchester No41 small rifle primers. I always pull at least 1 primer per sleeve to make sure I didn't get another dead brick or dead sleeves. I loaded ten 45acp small primer shells with them. The 1911 set off all 10 of them. It's firing system all original mid 2000s Springfield armory with the firing pin return spring cut back slightly. So it probably has a titanium firing pin and shares the same firing pin as the 9mn 1911. Should have about an 8lb hammer spring. supposedly 1911 hammer springs for 1911 go all the way up to 20lb. The hits were a little light but I could just go with a slightly heavier hammer spring or regress back to a steel firing pin. I hear glocks can't even set off normal small rifle primers reliably. That's why I load all my glock safe ammo with federal small pistol primers. Fed uses brass to make their small pistol primers that's both thinner and softer than the other domestic primer manufacturers. Ideal for "glock perfection". I figured that's why most of the hard core glock fan boi /shrill types ran federal ammo.
Glock18 parts kits are available from time to time. The frame is the machine gun and you can get intact glock18 slides once in a while.