The question was not if the safety lever was a MIM part, but if it is a two piece part. I'm well aware of the fact, that Browning uses MIM in Hi-Powers for at least 10 years. Before that, on Mk. III guns, those parts were castings. The OEM safety lever IS a drop in part, at least for Mk. III guns - the sear blocking tab is pre-shaped and by any practical means it is working the way it should - sure it allows for some sear movement, but it's rather small and of no concern. Only purists will not like that and will demand a safety that blocks the sear with no movement at all. By the way, Browning shows some remarkable consistency in the firing mechanism part's dimensions throughout the years - on my Mk. III Hi-Power I'm using a heavily modified early style ring hammer (sure it's different, but by all practical means it's a drop in part) and an early style firing pin stop (with small radius at the bottom) - again, no fitment needed.