Got permission from the owner to post the following build from Instagram, but they would rather I not link back to their account:
For those with fixed stocks who couldn't get a folder and don't want to get a Zhukov, this show's an interesting alternative. The pictured firearm has a SigmaCo 1913/Picatinny stock adapter with a folding 1913 to buffer tube adapter; such adapters are available for purchase from forum vendor the Shooting Edge. Alternatively, if you don't want the flexibility of a 1913 mount, you could get the AR-15 buffer tube adapter and get a folding adapter for AR-15 tube socket adapter. It is also cool to see the Sigma handguard with full extension. Looking forward to TI's handguard solution for comparison when it comes out!