Check the listing for details. 6'' Short Tactical Bipod Adjustable Spring Return 20mm Picatinny Mount Adapter. Condition: New. Listed at 19.95 USD. Product Description: QUALITY AND DURABLE: This bipod is made of high-tech durable aluminum steel for all weather capability, increase shooting accuracy with the stability of an adjustable and fold-able device bipod. LIGHTWEIGHT AND VERSATILE: This bipod grip is very versatile and lightweight with user-friendly clamp-on feature. ADJUSTABLE DESIGN: Designed to use a durable and fully adjustable polymer constructed body, spring action and pop out aluminum constructed legs. EASY TO USE: Spring-operated is easy to operate, and can be folded under barrel when not in use. EASY TO INSTALL: Clever adjustment wheel compatible with standard 20mm Picatinny rails, designed for easy installation and setup. Choice: Just the bipod / Bipod with 5 slot rail section / Bipod with AP-BR-032 ( Adapter ) Length : 145-160mm (5.7-6.3 inch ) Height : 150-169mm ( 5.9-6.6 inch) Package: 1 x Bipod Mount