Area 419 ARCALOCK 12″ M-LOK Dovetail Rail
The ARCALOCK 12″ M-LOK Dovetail Rail adds a full-length ARCA rail to an M-LOK stock or hand guard on a precision rifle. Ordinary ARCA rails hold accessories by clamp friction alone, so a barricade stop or bipod can slip under load; the ARCALOCK rail has serrated sides that engage Area 419’s ARCALOCK clamps and lock them mechanically in place.
- Serrated rail sides lock positively with Area 419 ARCALOCK clamps – serrations are not sharp and will not damage bags or hands
- Backwards compatible with standard ARCA accessories (these fit but do not lock without the Area 419 clamp)
- Made to the RRS 1.5″ dovetail standard, so lever clamps work
- 12″ length covers the whole forend for bipods, barricade stops and other accessories
- M-LOK slots on the underside of the rail for mounting M-LOK accessories
- All corners radiused and all edges chamfered
- 6061-T6 aluminium, Type III hard-coat anodized, made in USA
Requires 6 consecutive M-LOK slots to attach; for stocks with fewer slots, Area 419 offers a 12″ universal rail with M-LOK nuts instead. All M-LOK mounting hardware is included. The rear angled barricade stop is sold separately. Colour: Flat Dark Earth.
Specifications:
- Length: 305 mm (12″)
- Weight: 116 g (4.1 oz)
- Dovetail standard: RRS 1.5″ (ARCA)
- Mounting: M-LOK, 6 consecutive slots
- Material: 6061-T6 aluminium
- Finish: Type III hard-coat anodized, Flat Dark Earth
- Made in USA




































