Out of stock
SKU: ARSRS-RAIL-4M
UPC: 850036188537
The Arisaka 4 M-lok Slt Pic Rl W/qd Sckt is a precision 1913 Picatinny rail segment engineered for operators and armorers who demand true modularity on modern carbines and precision rifles. Built by Arisaka Defense—a manufacturer known for uncompromising attention to detail in the tactical community—this 4-inch rail solves a critical problem: creating clean accessory mounting in tight spaces without sacrificing Picatinny standardization. Whether you're building a side-charging upper, managing clearance around a low-profile gas block, or establishing a secondary optic or light mount point, this rail delivers the precision interface your setup requires.
This rail features a precision-machined 1913 Picatinny profile milled to exacting tolerances, paired with an integral QD (quick-detach) socket at one end—allowing rapid mounting and removal of compatible sling attachments or accessory plates without tools. The included standard and short screw options address the most common installation scenarios, including tight fitment near gas blocks and handguard junctions where standard hardware would interfere. At just 0.25 lbs and measuring 8 inches in length, the segment is engineered for M-Lok slot compatibility, ensuring seamless integration with modern free-float handguards and rail systems. The hardened steel construction and precise geometry eliminate any play or rotation—critical for maintaining zero on mounted optics or lights.
Law enforcement armors, competitive shooters, and military personnel benefit most from this rail when building specialized configurations—suppressor-ready uppers, precision-rifle platforms, or duty rifles requiring secondary optic mounting without full-length rail coverage. Installation is straightforward: secure the rail to any M-Lok slot using the provided fasteners, then mount your Picatinny accessories directly. The anti-rotation QD socket ensures that quick-detach hardware stays indexed, preventing accidental shifts during high-recoil shooting or vehicle operations. Compatible with all standard 1913 Picatinny accessories, this rail represents the backbone of modular rifle building done right.
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