Bulgie kit ... NODAK-SPUD receiver and enough USA parts to 'fool' the bureaucrats w/ their import 'restrictions' ... it's 'more'$$$$ than what you quoted, and it's in 5.45X39mm ... a.k.a. the 'new' 5.56X45mm NATO. Good ammo ... good penetration ... really, really good prices right now ... until the 'unwashed' discover it.A4's- I'm in CA so Kalish pistols are fairly challenging to come by. Is that by chance a Lancaster pistol? Mike at Lancaster recently quoted me $799 for their CA compliant bullet button version. I realize it's not practical- but tactical applications? A possibility with that rig. Is it chambered in 7.62x39?
The toughest thing is finding magazines -- other than metal as they always seem to fit -- that are 'bakelite' and will fit/function. Don't believe what ANYONE tells you ... it's an individual magazine thing.