Just curious, bot sure I like the HK hook thingy...

So used to QR type I’m at a loss...

Wonder if the Scorpion adapters would work?

Gratuitous pic of RDB I picked up today:
Attached File

Ordered one yesterday myself.

I will be having the same question.

I do have a set of those funky cable style swivels that I am sure would work, although they aren't very quick detachable.

Nice bullpup.....shot it yet?

I use the HK hooks on mine…

I have yet to see a good explanation for how the factory sling is supposed to work; it seems like it's missing parts to me.  I rigged mine up as a fixed-length belt with the clasps at both ends.  One clasp on the eyelet right above the pistol grip (left side, as I'm right handed) the other clasp attached to the first one.  Length adjusted so the strap can pass around my neck, and the gun hang vertically below my right-side arm pit (or be slide forward/backward as needed).  Because of the the RDB's balance, the gun tends to hang vertically when suspended from this single point.  Unfortunately, the sling is hampered by the fact it cannot be tightened on the fly the way I have it configured, plus it's nearly doubled-up in order to be short enough.

Yeah I looked at the sling that came with mine and decided to put it back in the box. Urban ERT makes a sling for the RDB that is configurable for two point or single point and looks to be pretty adjustable. I like their sling for the PS90 so I am most likely going to try it.