More expensive than military grade, but Nighthawk was putting out high quality Hi Powers. Not sure if they still are.
Regent is bringing in new hi-powers from Turkey, calling it the Tissa BR9. Blued or stainless. Supposed to be a near perfect clone, but I'm hearing issues with extractors breaking with less than 500 rounds. Personally, there are plenty of Israeli issue surplus guns coming back into the country now, I'd go for one of those. Gunbroker usually has plenty of them listed for around $4-500.