SPEED Airsoft have sent over details of their dual spec KeyMod:
Dual Spec KeyMod by SPEED Airsoft
The new SPEED Dual Spec KeyMod airsoft accessories will fully support the KeyMod specification to ensure the exact fit and compatibility. SPEED Keymod products, including the nuts are all in-house CNC precision machined for the highest quality.
All SPEED KeyMod based airsoft products come with the Dual Spec KeyMod nuts system, that will support both Mil Spec nut specification as well as Airsoft nut specification.
The SPEED Dual Spec KeyMod nuts system will enable users to fully utilitze the SPEED KeyMod products on both KeyMod standards.