The Accu-Tac FC-4 G2 F-Class Bipod with the quick detach was designed, engineered, and manufactured in the USA. This bipod is perfect for long-range, target, competition, and tactical shooting. The FC-4 G2 is 100% billet, made from the highest quality aircraft aluminum available. This is one of the best benchrest bipods on the market.  Of course, the quick detach rail mount is simple, quick, and very secure. It can attach to a 1913 Picatinny rail and mounts in seconds without the need to use extra tools for tightening. The F-Class has the ability to pan, and cant. The leg design allows the shooter to quickly adjust to 5 different positions with the advantage of being able to position each leg differently. To engage or adjust leg position, simply pull the leg downward to move each leg independently. Leg positions can be deployed in a 45 or 90 degree position either forwards or backwards, locking securely into 5 positions through a 180 degree arch.   Materials 6061 T6 Aluminum alloy / High strength steel hardware Min. Height (Legs at 45°) 5.25” / 133.4 mm Min. Height (Legs at 90°) 6.75” /171.4 mm Max. Height (Legs at 90°) 8.25” / 209.5 mm Min. Stance (Legs at 45°) 12.25” / 311 mm Max. Stance 16.5” / 419 mm Closed Position Width 7.5” / 190.5 mm Closed Position Length 7.5” / 190.5 mm Weight 28.2 oz Color Black Coating Type III ( MIL-SPEC ) Hard Anodize