Blackthorne has them now, both for $25!!
First two photos show the wobbly fit of the Blackthorne stock parts, though they appear brand new.
The next two photos show the 24 Hour Tactical (Thanks John) Galil R4 complete stock. It fits absolutely perfectly, no wobble at all, very tight. The tubular part and butt seem to be some kind of polymer plastic. I'm sure it's very strong though. VERY happy with the 24 hour stocks.
The last photo shows the difference between the two receiver end stock parts, where the majority of the wobble is coming from.
(the green fingernail is from painting my son's little resin figures. It's nothing more than that!!)
****Installing the stocks axle pin, and spring, takes almost all of the sloppy looseness out of the somewhat poorly machined Blackthorne stock hinge parts. You'll need to machine a little metal off the hinge to allow the full movement of the hinge, up and down.
Let me say in addition, that Blackthorne has a "no questions asked" (3 day) return policy, which they are good for.