B&T Impuls-OLS Compact Suppressor 9mm, 1/2×28 Thread, Black Based on the proven Impuls-IIA suppressor, the Impuls-OLS was designed for specialized military and law enforcement missions when every gram of weight makes a difference. The Impuls-OLS pistol suppressor in 9x19mm has been designed to offer users a high-performance solution when seeking a balance between minimal size [...]