I wanted to put one of these handguards on my CZAR pistol, however, I did want remain outside the parameters of the NFA.
I simply took @hunteroftheyellowdog:4's handguard with the same features and angled the MP5 style grip 5° forward. This is technically no longer a "vertical grip" and should not meet the criteria of a "90° vertical grip" thus exempting the pistol from NFA regulation.
The can cut area is approximately 1.375" in diameter - please take this into account if using with a suppressor or muzzle device of similar dimensions. Because of the proximity to things that get toasty, I would recommend some sort of Nylon for strength but you may be able to get by with ABS or ASA.
All that said - print and use at your own risk. I am not a lawyer nor do I play one on TV. I have not actually tested this yet so please consider this an untested item.
LBRY Tags: vz61; czar; handguard; mp5 grip; ssszarr