The KAK Shockwave Blade Pistol Stabilizer is a patent-pending stabilization system made from high strength polymer and is lightweight, ergonomic, BATFE approved for the AR-15 pistol.  The Blade incorporates a flexible stabilizing fin which rests against the forearm while in the firing position. The Blade is made to tight tolerances and fits the KAK shockwave tube and any tube less than 1.25″ in diameter.