Perhaps the best ACR stock adapter for the 805 Bren. Compared to the competition that are out there, Dan Haga Designs ACR stock adapter is bar none. The quality of the form, fit, and function doesn't get any better.
I was hesitant about it being 3D print SLS nylon at first and really wanted an aluminum adapter, but after researching the about SLS nylon, it's actually strong and durable. I actually prefer the adapter being plastic than aluminum/steel because the other competitions' aluminum/steel adapters will eat up the plastic of the hinges on the ACR stock itself and at the plastic folding release button which is no good. A plastic adapter may be better suited for the ACR stock.
Aesthetically, the adapter looks good and completes the the 805 Bren nicely; the adapter allows a smooth transition from the end of the 805 Bren to the front of the ACR stock whereas competitors has disruptive angles/lines and does not flow well.
The fit is really snug & tight; absolutely no wobble or gaps between the adapter and the ACR stock, it's SOLID. The folding operation and mechanism simply works.