Accu-Tac BR-4 Quick Detach BiPod Model BRBQD-0400 Accu-Tac's BR-4 Bolt Action Bi-Pod with the quick detach was designed, engineered, and manufactured in the USA. This bi-pod is made from quality aircraft aluminum available. The quick detach attaches to a 1913 Picatinny rail and mounts in seconds without the need to use extra tools for tightening. Its leg design allows the shooter to quickly adjust to 5 different positions with the advantage of being able to position each leg differently. Description: Bipod Type of Bag: N/A Prefilled-Empty: None Type of Feet: Rubber Cradle Blocks: Metal Material: Aluminum Vertical Adjustment: 5.3-6.75" Weight: 14.6 oz No. of Legs: 2