The Arcalock dovetail rail system is a groundbreaking advancement in precision rifle stability, developed by Area 419. This system addresses the limitations of traditional ARCA rails, which often depend solely on friction and can slip under pressure, particularly when using a barricade stop. The Arcalock system introduces a mechanical locking mechanism that offers unmatched stability and security, preventing unwanted movement. This innovative design provides shooters with the confidence and precision needed in high-stakes competitions or practice sessions at the range. The Arcalock dovetail rail system represents the next level of precision rifle technology, where innovation meets excellence. The rail maintains backward compatibility with standard ARCA accessories; however, it will not lock securely without our proprietary clamp Designed according to the RRS 1.5 inches dovetail standard, ensuring compatibility with lever clamps Type III hard-coat anodized for enhanced durability Constructed from 6061-T6 aluminum Manufactured domestically in the USA using aluminum sourced from the USA on CNC machines made in the USA M-LOK slots located on the underside of the rail enable the attachment of any M-LOK accessories to the 419 rail The rail includes all necessary M-LOK mounting hardware The serrated sides of the rail engage with our proprietary clamp design to mechanically secure it in place, ensuring no movement occurs The serrations are not sharp and will not damage bags or harm your hands The rail measures 12 inches in length, providing the full extent of the stock forend for attachments Notably, it maintains a lightweight profile, weighing only 4.1 oz