Most peak aesthetic carbine or SMG?

The AKMSU, or in Russian Автомат Калашникова Mодернизированный Складной Укороченный (pronounced Avtomat Kalashnikova Modernizirovanny Skladnoy Ukorochenniy). Which means Shortened Modernized Kalashnikov Automatic Rifle with Folding Stock is derived from the AKM, it was originally described as a prototype of Soviet origin that presumed it was built in either 1959 or 1975 (the specific date is actually unknown). It is a gas operated, rotating bolt carbine that uses 30-round box magazines from the AKM, I assume it can also use 40-RPK box magazines or any AKM compatible magazine. It has a Norinco Type 56-1 receiver, a 1977 AKM trunnion, a custom muzzle brake that is required for the carbine to function and an expansion chamber for the gun to properly cycle. The muzzle brake also has a bunch of grooves machined into it for better heat dispersion and the handguard is also custom. It was first put into the British Ministry of Defense Pattern Room in June 1986, then in September 2005 the Pattern Room closed and the whole collection of stuff there went to the Royal Armouries Museum in Leeds, England. Where the AKMSU has been ever since. Really cool history in my opinion.