Built to the tightest tolerances, the VLTOR low profile, clamp on and set screw gas blocks are small enough to fit inside most rail systems. These gas blocks were designed to be used when a rail system/handguard that is mounted over the entire gas system.
Many of VLTOR’s products are export controlled by the International Traffic in Arms Regulations (ITAR). Shipments from VLTOR may contain products controlled by the U.S. DoS or the U.S. DoC. Export of such items may not be done without prior approval from the U.S. Government and VLTOR.