As for the grendel's. They were cool and all. Dad loved them so much he collected several pistols, one rare long barrel pistol and a pair of the rifles. Same as the pistols but with a collapsible stock and long barrel and like 50 mags.
I think Mom still has some of them left.
I did not care for them or there brother the P10 a 380 pistol.
I found the P30 had a feeding issue with some ammo's.
Still they were very cool for what they were. I mean having 30rounds of 22mag in a pistol is not bad!
But I traded my pistol and rifle to Dad for getting me my newer model Steyr in 40.
I would consider owning a block but I don't like the grip angle.