Tuner: Thank you for the excellent guidance. Before I detail strip my Colt, I plan to buy Kunhausen's book on how to disassemble a 1911. I am new to 1911s and have a lot to learn. They are facinating, and I look forward to the task. No sprues!
I see so many threads asking "what type of 1911," "whats the best 1911" etc. and every time I reply, "Colt 1991A1." (Or some other milspec Colt if legal in your area.)
Series 80 goofiness screwing up the trigger
Grip safety. Look on the inside for a square depression. You guessed it...MIM. Those are sprue marks where the metal was injected into the mould. If they're not there, they're machined barstock.
A bit of a myth, unless you are trying to get your trigger under 3 pounds or something. There are alot of non-Series 80 guns out there with inferior trigger pulls to Colt's current Series 80-equipped 01991 guns. Heck, the actual Series 70 Colts I've gotten to play with had worse trigger pulls than the stock 01991 gun I had.