Seekins Precision MRAS 3.3 in. ARCA Rail The Seekins Precision ARCA rail gives your rifle a durable, lightweight mount for bipods and tripod heads. Order yours from BattleHawk Armory. Why Buy It ARCA interface for bipods and tripods Integrated M-LOK slots Integrated RRS-Lock for RRS tripod heads Light 6061-T6 aluminum It bolts to M-LOK with the included hardware and adds an RRS-Lock so it works with Really Right Stuff heads. The BattleHawk Armory team can answer fit and compatibility questions before you buy. Specifications Manufacturer: Seekins Precision Model: MRAS ARCA Rail Length: 3.3 in. Weight: 2 oz Material: 6061-T6 aluminum Mounting: M-LOK, all hardware included Finish: Type III hardcoat anodize MFR Part Number: 0010560093 UPC: 811452022621 Built for a stable rest on any support.