Firstly, it should be reiterated that all genuine Blaser-branded carbon bipods and stock fittings, produced by us and sold by Blaser, are specifically designed to fit a 12.5mm socket size, which is incompatible with Spartan's 12mm socket size used for all other products and adapters.

As all Spartan fittings have a 12mm socket size, they cannot be directly interchanged, which frequently causes confusion among Blaser owners and others.