This is the VZ-61 Version 6 by Daviot. This version is a modification of brute's vz61 receiver that requires less tooling.

 Changelog
Update 2/21/2017-Added threads to the lower receiver to allow the grip screw to thread into the printed receiver as on the metal versions, as finding a tap for ISO M15x1 RH threads is a pain. Also included is a printable M15x1 RH nut to testfit if your printer can print adequate threads.-Daviot

Update 4/22/2014
* Increased OAL between takedown pin hole and buffer tower .014 in
* tightened magwell length to proper spec
* adjusted mag release button diameter and slot
* adjusted bolt hold open hole diameter and made cut for clearance on bottom
* adjusted fcg hole diameter
* increased material behind ejector to improve strength
* added fillets inside fcg pocket to improve strength
* increase pistol grip hole size
* adjusted pistol grip slot for more clearance towards front
* added stock clearance cut and retainer hole
* added clearance for stock when open
* added clearance cut for fcg pin to sit flush
* added two 'lightening' on sides of magwell as well as buffer tower rear for cosmetics.

 Build notes (Daviot)
* This new v6 includes printed threads for the grip screw. If you would rather cut said threads yourself, use the the v5 model and use a high-speed steel tap.
* If printing in ABS, the magazine well will require sanding and test fitting due to shrinkage.
* If building a semi-auto Vz-61 from a military parts kit, you will need either a semi-auto sear or to cut the interruptor prong off the sear and a semi-auto selector switch.