Otter Creek Labs OTB Flash Hider Features The Otter Creek Labs OTB Flash Hider is built from H900 heat treated 17-4 stainless steel a material chosen for its resistance to the heat and stress generated at the muzzle under sustained fire. As a one piece adapter it combines true flash suppression with the company s proven OTB mounting interface letting shooters move directly from an open muzzle device to a suppressed setup without swapping hardware. It is sized for 5/8x24 threads and fits barrels with a diameter of 0.75 inches or less covering the vast majority of rifle caliber barrels on the market. A minimum of 2.05 inches of exposed barrel length measured from the shoulder is required for proper fit and function. Once installed the OTB Flash Hider accepts OPS 12th model OCM5 or AEM5 suppressors giving shooters a direct path into Otter Creek Labs suppressor lineup without needing a separate adapter. The stainless steel construction stands up to the corrosive byproducts of sustained firing better than many coated finishes making it a durable long term choice for a rifle that sees regular use. Because the flash hider doubles as the suppressor interface shooters reduce the number of parts on their muzzle and simplify the process of mounting and removing a can in the field. For shooters running an OTB-compatible suppressor system this flash hider is a practical durable foundation for the whole setup. Otter Creek Labs OTB Flash Hider Specifications Manufacturer: Otter Creek Labs Model: OTB Flash Hider Material: Stainless Steel Thread Pattern: 5/8x24 Attachment Type: Mount Available At: GrabAGun