The SME Bipod with Spring Retractor uses a dual-mounting system to securely attach to any 1913 Mil Standard rail or a dome-style stud.  Simply clamp the bipod to any 1913 / Picatinny rail or use the two included dome stud adapters, which also provide a sling swivel attachment point. The legs are adjustable, spring-loaded, and facilitate rapid deployment. The legs are also round column foldable and extendable between 6.5” and 8” for adjustable shooting positions. Simply pull to extend the leg in position, and press the button to retract the legs.