Perhaps, but it is stupidly easy to clean and ridiculously reliable - two things the AR just isn’t.
It’s also gas piston drive, just like the FAL, Garand and pretty much every other great battle rifle since the first World War.
I used to have a Swedish Ljungman semi-auto in 6.5X55.
It was a real oddball and I am not sure I ever really figured out how it worked. It used a direct impingement gas system well before the AR-15.
It’s magazine was intended to stay with the rifle and was very heavy duty, but looking at it you could see how easy it would have been to change to 20 or 30 round magazines. The magazines were already easy to remove tho I have no idea why.
It frankly looked a little clunky but you forgot that when you shot it. It was as sweet shooting as any rifle I have ever fired and also unusually accurate. At 50 yards with the open sights, I could put them all in one large hole.
The gas system could be regulated and not just two or three notches. It had a lot of adjustment. When I got mine it was throwing Norma brass around 20 feet so I closed it one notice and that made it throw them only around 10 feet. Probably could have closed it another notch and still been reliable.
To repeat the most important thing. “It was a sweet shooter”.