Carbon Fibre leg extensions for the Javelin, Spartan 300 and Blaser Bipods. These extensions will give added stability and height when you are in long grass, heather or crops. The extensions also add clearance for rifles with larger capacity magazines. We have 4 sizes to choose from 20cm (7.8"), 30cm (11.8"), 40cm (15.7") and 50cm (19.6") sold as pairs. Simply remove the lower leg section from your existing bipod and replace with the length of your choice.