The Strike M-LOK ARCA Rail Adapter enables easy mounting on ARCA Swiss mounts. Angled front corners to reduce snagging during ARCA mount insertion. Securely and conveniently adapter M-LOK to ARCA Swiss. Threaded holes along adapter rail for SI ARCA accessories. Machined from 6061-T6 aluminum, ARCA Swiss mounts have become the industry standard. With the Strike M-LOK ARCA Rail Adapter, you get a low-profile lightweight option to adapt most M-LOK surfaces. Package Contents: x1 Strike M-LOK ARCA Rail Adapter - 6.8" x4 Screw x4 Nut x1 Torx tool [T15] x1 LoctiteA(R) Threadlocker Blue 243A(R) Product Features: Enables easy mounting on A Mfg: Strike Industries