"Is there a way to improve the balance on that polymer lower? Metal grips, etc?"
If it's a grip frame with the 1911 style panels, then any 1911 grip panels should fit. There are weighted panels for specific uses IIRC.
I agree that adding a long, heavy barrel to a 22/45 makes it muzzle heavy. Many precision shooters prefer this as I do. I no longer do much off-hand pistol shooting so it's no much of an issue for me. One of my go to field positions is sitting using crossed sticks with the barrel/muffler junction in the X. With elbows on knees, this is a very stable position.
If it's a grip frame with the 1911 style panels, then any 1911 grip panels should fit. There are weighted panels for specific uses IIRC.
I agree that adding a long, heavy barrel to a 22/45 makes it muzzle heavy. Many precision shooters prefer this as I do. I no longer do much off-hand pistol shooting so it's no much of an issue for me. One of my go to field positions is sitting using crossed sticks with the barrel/muffler junction in the X. With elbows on knees, this is a very stable position.