https://en.wikipedia.org/wiki/Steyr_AUG
LARPfag here. The StG77 is the only rifle I know, but I can't believe you can ask for more.
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Look through telescope
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Put center of crosshairs over target
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Pull trigger
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See target pop
Muzzle velocity is 970m/s -- no imagination or mental acrobatics required for targets closer than a hundred yards. Aim a palm or so higher for each extra hundred yards. The rifle is mostly made of plastic and absolutely no burden, not even on 30 ml walks. Careful cleaning is a requirement for automatic action, though, especially for and after using blinds.
How does that compare to U.S. army rifles? Or a Kalashnikov? A problem for guerilleros might be that all parts are machine-tooled, so you need special equipment for making spares.
Most intermediate cartridges work that same way. Point center of mass, pull trigger, get a hit between 25-230 yards. There are tricks for shorter distances (put the front post on the top of the back ring for close quarters) and adjustments on some rifles for longer ones. Look up "maximum point blank range" for a longer explanation. Not completely sure how wishcom optics factor into this, but since it's related to the ammo, they're probably fine.
Trade-off on bullpups is it's more difficult (read: slow) to reload, and more maintenance due to more complex trigger assy. Advantage is the barrel is longer compared to the overall length (or the OAL is shorter compared to barrel length). Neutral differences are the ergonomics are fundamentally different. Weight is comparable to other 5.56 rifles like ARs, Kalashes in their 7.62 with wood furniture are obviously heavier. In .mil terms, it fills the same role as an M4 or M16, depending on config.
It's not a sexy answer, but unless you plan on clearing buildings all day, an AR is probably a better choice. From what I've heard, the main AR replacement parts are the gas rings, bolt/extractor, and springs. Steyrs may need more, but I have no clue. I know the one nice thing about Steyrs is the barrels can be quickly swapped, so I guess there's that. You probably can't manu those parts on your own for either style, but AR replacements will be more ubiquitous. Costs will also be better for ARs. The Steyr will be 1900+, while ARs have budget options around 500, or you can buy expensive ones beyond 3000.