Area 419 Firearms ARCALOCK RailChanger Arm/Clamp Combo - ARCA Dovetail

The Area 419 Firearms ARCALOCK RailChanger is an arm-and-clamp combo designed to mount directly to any standard ARCA / 1.5" dovetail rail. Part of Area 419's broader ARCALOCK precision-rifle platform, it gives precision-rifle shooters a fast, repeatable interface for attaching rear bags, barricade stops, and other rifle accessories without the slop of improvised mounting setups.

The clamping screw is engineered with two different thread pitches, letting the shooter toggle between fine tensioning for a locked-down hold and rapid engagement for quick position changes. Internal detents keep the clamp positively indexed on the rail, while a ~1/4 turn of the screw releases the clamp from the rail for fast transitions between stages on the range or during barricade work.

Machined from aluminum right here in the USA, the RailChanger comes in at roughly 0.4 lbs with overall dimensions of approximately 9.1" x 3.2" x 1.2". It is intended for shooters already running an ARCALOCK-compatible dovetail rail or who want to add an additional arm-and-clamp combo to their existing precision-rifle setup.