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**44 AMP** · April 15, 2018, 11:13 AM

Just to be clear, are you talking about the Auto-Ordnance M1 semi auto??

and, if so, is the receiver steel??? The "lightweight" models (listed at about one pound lighter weight) used Aluminum alloy though I don't know remember if it was the upper, the lower, or both.

If your upper isn't steel, that could be why the screws don't stay tight.

I have one of the deluxe 1927A1s, all steel and wood. Never had any issues with anything coming loose.

April 15, 2018, 11:13 AM	#3
44 AMP Staff Join Date: March 11, 2006 Location: Upper US Posts: 28,839	Just to be clear, are you talking about the Auto-Ordnance M1 semi auto?? and, if so, is the receiver steel??? The "lightweight" models (listed at about one pound lighter weight) used Aluminum alloy though I don't know remember if it was the upper, the lower, or both. If your upper isn't steel, that could be why the screws don't stay tight. I have one of the deluxe 1927A1s, all steel and wood. Never had any issues with anything coming loose. __________________ All else being equal (and it almost never is) bigger bullets tend to work better.