ARCALOCK 17" UNIVERSAL FLAT RAIL W/MLOK HARDWARE Area 419 is always looking for ways to improve existing products when Area 419 are not developing new technologies. With the rapid growth in popularity of ARCA rails in precision rifle, they saw a need to improve this great dovetail technology to something that could be mechanically locked in place instead of just friction. If you have ever tried using a Barricade stop on an existing ARCA rail, you've probably also seen it slide under much pressure. Introducing the ARCALOCK Dovetail Rail System *Rail is only locking with an Area 419 clamp* *MLOK Hardware included.* Rail Features: Serrated rail sides in Mfg: Area 419