The Otter Creek Labs OPS/AE OTB Flash Hider is a heat-treated precision muzzle device engineered to simplify suppressor mounting on modern rifle platforms. Built as a single-piece adapter, this muzzle device functions as both a flash hider and a quick-attach mount for OPS 12th gen and AEM5 suppressors, letting you run sound mitigation without sacrificing performance or requiring gunsmith work. Whether you're running a short-barreled rifle, a mid-length carbine, or a precision build, the OTB eliminates the need for custom collars or barrel modifications—just verify your barrel specs and you're ready to suppress.

Manufactured from H900 heat-treated 17-4 stainless steel, the OTB is built to withstand thermal cycling and magnum-level pressures. The one-piece construction means fewer parts to fail, looser tolerances to stack, or connections to rattle. You can choose between black nitride coating for corrosion resistance and lower visibility, or raw heat treat if you prefer a natural steel finish and minimal coating variables. Both finishes start from the same hardened base material, so durability doesn't change with your aesthetic choice.

Compatibility is straightforward: the OTB accepts any barrel threaded 1/2×28 with an outside diameter of .75" or less, and requires a minimum of 2.05" of exposed barrel measured from the shoulder. This covers a wide range of modern rifle platforms, from 5.56 NATO to larger magnum cartridges. Once installed, it presents a clean, compact platform for mounting your OPS 12 OCM5 or AEM5 suppressor and a unified system that's easy to maintain and reconfigure in the field.

The Otter Creek Labs OPS/AE OTB Flash Hider is a heat-treated precision muzzle device engineered to simplify suppressor mounting on modern rifle platforms. Built as a single-piece adapter, this muzzle device functions as both a flash hider and a quick-attach mount for OPS 12th gen and AEM5 suppressors, letting you run sound mitigation without sacrificing performance or requiring gunsmith work. Whether you're running a short-barreled rifle, a mid-length carbine, or a precision build, the OTB eliminates the need for custom collars or barrel modifications—just verify your barrel specs and you're ready to suppress.

Manufactured from H900 heat-treated 17-4 stainless steel, the OTB is built to withstand thermal cycling and magnum-level pressures. The one-piece construction means fewer parts to fail, looser tolerances to stack, or connections to rattle. You can choose between black nitride coating for corrosion resistance and lower visibility, or raw heat treat if you prefer a natural steel finish and minimal coating variables. Both finishes start from the same hardened base material, so durability doesn't change with your aesthetic choice.

Compatibility is straightforward: the OTB accepts any barrel threaded 1/2×28 with an outside diameter of .75" or less, and requires a minimum of 2.05" of exposed barrel measured from the shoulder. This covers a wide range of modern rifle platforms, from 5.56 NATO to larger magnum cartridges. Once installed, it presents a clean, compact platform for mounting your OPS 12 OCM5 or AEM5 suppressor and a unified system that's easy to maintain and reconfigure in the field.