I bought "Fed. Ord." alloy 1911 frames for $29-39 each from 1982-1992 and built about 40 "shooters, using GI parts and re-welded slides. I sold them for $129-169. My guarantee was, "They go bang every time!" I meant every single time. SWC ammo, Ball ammo, filthy. even used one full of sand while canoeing! They go bang every time!>>>UNTIL the dust cover breaks off! That happened around the 800 round mark. Most of the time they would still function after it broke off. But on my best friend's personal 1911, the frame cracked out at the slide release and then fired out of battery, sending shrapnel into his strong hand and face. The last 2 1911's I built were on Essex steel frames, these were both our personal guns and we rebuilt using the parts from broken frame guns! I probably have 15000 rounds through mine. I doubt I will ever build another, as the GI and after market parts have risen in price that I can buy a deaccent functioning brand new gun for less than the parts alone. ( I still keep enough of the small parts to build 2 or 3 more guns, but that is to keep my (8 and my 3 sons all have at least 1) 1911's in fine working order.
So those Fed. Ord. frames let me make $20 a gun and about 36 people got a functioning 1911 for about 40% of a Colt that didn't work out of the box! I had fun doing it, but with the las changes and everybody likes to Sue, those days are over!
Ivan