Dophee Portable Reinforced Plastic Clamp Bipod For Sniper Rifle Gun Stand Mount Hunting Easy to use bipod fits all rifles irrespective of calibre. Easy to use spring clip for quick attachment and release. Spring loaded design, folds up for easy storage. Suits most barrels around 16mm diameter, not recommended for use with underlever rifles. Size: 31.5*9.0*2.0cm(12.4"*3.54"*0.78").