Forged with protection, shaped with industrial style, and built for speed, SI Shocktube brings ballistic capability to new levels. Fully compliant with the ballistic and optical standards of MIL PRF 32432, SI Shocktube is composed of an upper and lower jaw to maximize impact protection. Simple lens exchange with an included hex-key, the product allows the user to swap lenses seamlessly. An Unobtanium nosepiece and thin ear stems makes SI Shocktube adaptable for the active needs of Military, Law Enforcement, or recreational shooting.