1911-A1 45 I bought this gun used. It's still tight no rattles but how do I make it more shooter friendly? Front sites are blade. Back sites are fixed. Trigger pull is a bear. Plastic grips. Not sure if it matters, but the serial number begins with NM. I do like the gun. Should I modify it or just leave it alone? I am on a fixed income but I do know you don't want to be on the wrong end of this gun. It's for home defense. It's a USA made Springfield.