LGT Nexus VHC Quick-Coupler
These quick couplers are warrantied for dueling, but are still new, so be careful!
you may notice wobbling. The union of the parts is strong, but the tolerances between the two components makes the joining feel less tight than the Vire coupler.
To connect, simply push the stem into the coupler while pulling down on the middle spring segment.
To disconnect, pull down on the middle piece. You may need to gently twist or wiggle the other side if it seems stuck, to help the bearings fall out of the groove.