Griffin's GP-N (GP-NATO) suppressor is a robust dedicated 5.56mm suppressor which provides secure fitment to common A2 compensator. The A2 compensator is a familiar muzzle device to nearly all AR15 rifle owners. This simple inexpensive yet effective compensator has served the military for decades. The Griffin GP-N was designed to bring modern suppressor technology to the A2 mountable class of silencers which started in the late 90's with the Gemtech