The AK-47 barrel you have is fairly suitable. You will need an AK-74/AKM styled body, not as easy to find, as most are milled AK-47 style.
The AKM muzzle brake I found right here for a good price. You can get one off WGC shop I believe.
You also need a Yugo plastic pistol grip. I doubt a real one will fit since most AEG AK grips are larger to house the motor and cage.
Why would you need new iron sights? You need the gas port... thingy.
Cheers,
Alex
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