Ok since this is a gift gun to a service member as a graduation gift. Why not get any 1911(Pick one that is nice, and can be shot if desired). Then have a nice personalized presentation case made for it? A nice well finished shadow box, with a graduation picture, and a brass plate engraved to state the occasion of why it was gifted, and whom it was gifted from.
Note Extra points if the case dispalys things like a Ranger tab patch, the silver ice cream cone, ect.
He would treasure it as a prized posession. Especialy the case.
My grampa made something similar for a cousin of mine that went into Para Rescue in the USAF. That case hangs on his home office wall today. He considers it one of his mosed prized worldly possesions. I am sure your bother would be the same way about a similar gift.
No matter how many times you do it and nothing happens it only takes something going wrong one time to kill you.