Ad-b3 qd modular base - American Defense Manufacturing AD-B3 Modular Base

Changing the original Primary Arms 3x Prism Scope mount was a must. Needed the replacement mount to be QD and have a solid hold on top of my AR build. The AD-B3 Base met my requirements. It is a good solid mount. Comes with replacement screws. Fits Primary Arms 3x Prism Scope (it is also compatible with the Primary Arms 5x Prism Scope).