Accu-Tac, WB-4, Bipod, Black 6061 T6 Aluminum alloy / High strength steel hardware Quick Detach Arca Spec Mount Four Individual Leg Positions and Five Height Positions Min Height 4.75" / 120.65 mm Max Height 7.75" / 196.85 mm Min Stance 10.0" / 254 mm Max Stance 14.0" / 355.6 mm 22.08 oz Flat Black Type III ( MIL-SPEC ) Hard Anodize The WB-4 Arca Spec QD bipod was designed to provide desired height and extra stability. This bipod style is ideal for long-range, extreme long-range, bench-rest, and for the airsoft platform. The wide, lowered center allows the rifle to sit between the legs which supports accuracy and helps reduce movement from recoil. This is only a suggested use, this model is not exclusive for these applications. The WB-4 is 100% billet, made from the highest quality aircraft aluminum available. This model has the versatility you want in a bipod with its 4 individual leg positions and 5 notch height options. It also has the ability to cant, which can be locked and secured with the adjustable lever. Their quick detach rail mount is simple, quick, and very secure, it attaches to an Arca Swiss or Arca Style rail and mounts in seconds without the need to use extra tools for tightening. To engage or adjust leg position, simply pull the spring-loaded leg downward to move each leg independently. Leg position can be deployed to 90 degree or 45 degree, locking securely into 4 positions. Please keep in mind the cant adjustment lever can be repositioned, DO NOT use a tool to tighten the canting tension.