Scroll up 6 posts from yours (page 3). It's the Tailhook brace.

They don't scream "AK" to me but they're a cool option for sure.

I didn't want the extra length of folder mechanism so I used the StormWerkz type-4 on both my M85/M92:

http://stormwerkz.com/stock-adapters/yugo-m92-m85-adapter-type-4/

I also used their rail to mount a Vortex Venom and Burris FastFire3:

http://stormwerkz.com/scope-mounts/yugoslavian-m92m85-scope-mount-fastfire/

Getting the rear trunnion drilled/tapped is NO joke but once you get it on whatever brace/stock (SBR) setup you end up using is going to be rock solid.  I used a SBA3 on both of mine after initially using the original SB-47.  That fork-style/under-grip style brace is OK for a range toy but is nowhere near as solid/stable as any of the StormWerkz adapters, and the angle is built into the adapter so there's no drop and the brace/stock goes straight back.

I have the PSA triangle brace too.

Looks right at home on an AK but a tad on the bendy/flimsy side IMO.

Anyone know of a solid brace that is designed to attach to a Picatinny base on the back of an AK receiver?

A3 Arm Bar

JMac Brace

Thank you