The 360 Precision Steel M-LOK ARCA Rail gives precision shooters a rigid, full-length ARCA mounting solution for any M-LOK handguard or forend. This 13″ steel ARCA rail provides a solid interface for bipods, tripods, plate adapters, and other ARCA or RRS-style attachments.
We machine this rail from 1018 cold-rolled steel to increase strength and durability. Before machining, we anneal the steel to relieve internal stress. This process helps the rail stay flat and true during production. The result is a rigid ARCA dovetail that maintains precise engagement under load.
The rail measures 13″ long and .45″ thick. It weighs 34.8 ounces. That added weight helps improve rifle balance and recoil control. Many competition shooters prefer heavier setups because the rifle tracks flatter and settles faster between shots.
We finish the rail in Blacknitride+™ for enhanced corrosion resistance and surface hardness. This treatment protects the rail from wear while maintaining a clean, professional appearance.
This steel M-LOK ARCA rail also features the Really Right Stuff R-Lock system. Precision-machined dimples run along the underside of the dovetail. These dimples interface with the RRS ARC-LR Lever Release Clamp and other compatible ARCA clamps. The design increases grip and reduces forward or rearward movement under recoil.
Installation is simple. The rail mounts directly to any standard M-LOK handguard or forend. We include (6) ½″ 10-24 screws and (6) M-LOK nuts for secure attachment.
What are the advantages of a steel M-LOK ARCA rail?
Steel adds meaningful mass and rigidity compared to aluminum rails. That added weight improves recoil control and rifle stability. It also creates a more planted feel on barricades and tripods. Competitive shooters often choose steel ARCA rails to fine-tune balance and reduce muzzle movement.
Will this ARCA rail fit my rifle?
If your rifle uses a standard M-LOK handguard or forend, this rail will mount directly to it. The included screws and M-LOK nuts provide secure installation.
What does the RRS R-Lock system do?
The R-Lock dimple pattern increases clamp engagement. When paired with compatible Really Right Stuff clamps, it reduces slipping under heavy load. This feature helps maintain position during recoil or tripod-supported shooting.
