Ultra-light Primos Trigger Stick Gun Mounted Bipods are sturdy lightning quick to adjust and manufactured with high quality heat treated steel and hard alloys. Each bipod comes with a quick detach gun mount that clamps to the sling swivel stud of bolt action rifles with a conventional stock design or a picatinny rail on a modern sporting firearm. So carrying your firearm with a sling or shooting offhand is not impeded. The integrated MagnaSwitch Mounting System allows shooters to connect their bipods quickly and efficiently to their guns for fast and accurate shots. Like every Trigger Stick Primos Gun Mounted Bipods adjust to your desired height with just one hand and the squeeze of the patented trigger. The Primos Trigger Stick® Gun Mounted Bipods are the ultimate solution for making your shot accurate no matter where you are. - Includes: (1) Classic Rifle Adapter - The only gun-mounted bipod with quick & easy one-hand adjustments - MagnaSwitch Mounting System with patented Spartan Precision Technology - Quick detach gun mount allows hunters & shooters to take bipod on/off quickly & quietly - Sleek head design for ultimate storability - 3 different heights/sizes (Short: 12-16.5 Medium: 21.5-40 Tall: 32-65) - Prone sitting/kneeling and kneeling/ standing - Strengthened joint for smooth panning