The R-LOCK feature in the clamp is a 5mm pin that mates with corresponding R-LOCK holes in the rail. The pin is spring-loaded to automatically engage the R-LOCK holes or be pushed down by non-R-LOCK rails, making it compatible with a wider range of “arca-type” rails. The user also has the option to disengage the pin at their discretion for rapid re-positioning. Note: Removing the R-Lock butterfly latch and index pin will allow for similar function as the Gen 1 Anvil.
The Anvil-30 ARC Ball head is purpose-built for heavy equipment support from the ground up. We added our patent-pending dual clamp system able to clamp both the RRS Dovetail standard and Picatinny rails in the same unit. We also removed extra knobs/adjustment settings under-utilized in the industry. The Anvil-30 ARC is as rigid as a leveling base but articulates like our popular photography ball heads while minimizing the limitations of each system. We designed this as a lightweight setup and realized its heavy duty potential.
The Anvil-30 ARC is available in a tripod package here TFCT ARC Tripods
For more info on what legs can be converted to a different apex, check out the images on the Fixed Apex Conversion Kit