Well this HK45 was a POS, it was one of the worst firearms I can ever remember owning. Faulty fitting grip inserts(all of them)with easily seen gaps between inserts and frame that would rattle & shake. You could actually feel them moving about under recoil!
The trigger guard had a groove in it, which allowed the trigger to pull without contacting the guard, probablly an effort of some kind to mitigate trigger bounce or something, regardless it would pinch the ops trigger finger under recoil(hard), and was extremely distracting.(I had an idiot gamer on Glocktalk call me a pussy for bringing it to attention, he apparently felt it was a worthwhile distraction because he thought the pistol cool looking)
The magazine feed lips were not shaving sharp, but they were damn close, they certainly could be made to slice paper! The pistol was very difficult to take down for routine cleaning, requiring deft fingerwork. It was huge, particularly compared to a pistol such as the G30SF, which held the exact same amount of ammo, at literally half the size.
The worst aspect of the H&K45 however was not that it cost well over a grand with all of its glaring imperfections, nope, it was the H&K customer service! They had the pistol for months while they worked at rectifying the terrible slop between the frame and the grip inserts. They were awful, completely indifferent to the concept of "customer satisfaction!"
Of course only a fool would believe all H&K pistols were as bad as mine was, anybody can make and deliver to market, a lemon, I had a G21SF blow up in my hand, injuring me. However, Glock was wonderful, they immediately responded, and took care of everything, even when it became obvious that it wasn't their fault. I don't think H&K would have done a thing, at least not without the prompting of an attorney, and that makes the defective product that sneaks by to market decidedly worse!