Made in the USA, this adapter features a Cross-Bolt Lock Bar in Paraclip that allows the user to optionally lock its lever closed for extra security. Steel Paraclip lever is case hardened and finished with Melonite for extreme resistance to wear and corrosion. For rear mounting it works with the Magpul ASAP for optimal shoulder transitioning in one-point mode as well as the SGA Receiver Sling Mounts. Also compatible with many snap-hook style sling loops* and standard or QD sling swivels. For front mounting compatible with the Magpul RSA, MSA, and Forward Sling Mounts, as well as many snap-hook style sling loops* and standard or QD sling swivels for use in two-point mode. * Snap-hook style sling loops with an inner diameter of at least 3/8 are required, but 9/16 and larger will provide full range of motion.