I dont think Ive ever seen a Miroku 94. The 94s ive had have been a mix of pre-64, pre-war, and a dozen or more post 64 top ejects. The early post-64 guns had stamped carriers (lifters), I replaced them with the forged or whatever they were in the 80s period just out of caution, but I dont know how the stamped ones held up over time. That was only for a few years in the 60s. I have an angle eject, probably made in the 1980s or early 90s, no crossbolt, has a tang safety, other than some parts having sharp edges, it seems to work about like any of the others with the benefit of a low centrally mounted scope. Choose mounts wisely, many set the scope too high. Leupold did it right with their two piece mounts and low rings. An older Leupold 1-4 works really well on it.
The Miroku made Brownings Ive had and seen have all been excellent quality guns. I have a 92 and 1886. The magazine spring failed on the 92 after leaving it loaded for 10 or 15 years, It got wimpy. I tossed it and replaced with one from a Winchester 94. Probably my favorite is a 94 made in 1927, it was a ranch gun in Az, was used heavily and severely abused, but still worked. I doubt it had been cleaned in any way on 30 or more years when i got it in the 1980s. I replaced a few odd parts that were damaged or lost, cleaned it in a vat of carb cleaner, and it was crisp and functioning perfectly, just not sludgey feeling like when I started. Looks like garbage, but works. I carry it a fair amount.