I have a Springfield Armory "GI 45" model 1911A1.
It is a Series 70 type of pistol. Being a military service model 1911 A1 replica it has the very small sights and very short GI style trigger. It also has a small, non-flared and non-fluted ejection port.
The sights and trigger did not work for me so I had a longer, three-hole trigger installed and reasonable three dot sights. I also had a national match barrel bushing fit.
I agree that the pistol overall appears to be well-made and it shoots accurately. My pistol has been plagued by ejection issues, however.
My pistol was given to me by a friend I had helped out. His son picked two identical pistols up at a PX coming back from a Middle East deployment and he gave one to me. His identical model pistol shoots flawlessly.
In addition to denting the ejected cases at the mouth, I had numerous stove pipe jams with the pistol and the occasional failure to feed. The pistol has been in the hands of two different gunsmiths for these problems and they persist. The extractor and ejector have both been changed and adjusted.
The small ejection port remains and I suspect the next step is to have the slide milled to lower and flare the port. I have largely eliminated the feed failures and most of the stovepipes, but the ejection is still erratic. I suspect the ejected cases are hitting the lip of the small ejection port and ricocheting off in various directions.
I have researched this model on the internet during my efforts to make this pistol reliable. I know that some owners, such as my friend's son, have had flawless function, there are reports on the internet from SA Model 1911A1 GI 45 owners who have had issues similar to mine.