Ocl Ops/AE OTB Flash Hider - Heat Treated Precision Muzzle DeviceOtter Creek Labs$182.93
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Otter Creek Labs
The Otter Creek Labs Ops/AE OTB Flash Hider is a one-piece adapter that combines a suppressor mount with an integral muzzle device, designed to streamline your AR setup while keeping things clean and functional. Built from H900 heat-treated 17-4 stainless steel and finished in black nitride, this mount lets you attach OPS 12th-pattern suppressors—including OCM5 and AEM5 models—to any standard 1/2×28 threaded barrel without custom work. If you run an AR with a mid-length or shorter barrel that needs a suppressor mount and a flash hider in one package, this is a no-fuss solution that eliminates the need for custom collars or barrel modifications.
The real advantage here is simplicity. You're not buying a basic mount and a separate muzzle device; you get both functions in a single, robust assembly. The H900 17-4 steel is forged to handle the pressures of direct-impingement and piston guns alike, and the black nitride coating resists corrosion without adding bulk. Otter Creek Labs earned a reputation for precision suppressor mounts, and this OTB version carries that same engineering to a wider range of shooters who need the flexibility of OPS 12th compatibility without a gunsmith visit.
Compatibility is straightforward: your barrel needs 1/2×28 threads, an outside diameter of .75" or less, and a minimum of 2.05" of exposed barrel measured from the shoulder. That covers most standard carbine and rifle uppers. Whether you're building a recce rifle, a suppressed hunting gun, or a duty-focused AR, this adapter sits between your barrel and suppressor with zero guesswork.
| Brand | Otter Creek Labs |
| Material | H900 heat-treated 17-4 stainless steel |
| Finish | Black nitride |
| Muzzle Thread | 1/2×28 |
| Maximum Barrel OD | .75" |
| Minimum Exposed Barrel Length | 2.05" (measured from shoulder) |
| Suppressor Pattern | OPS 12th |
| Compatible Suppressors | OCM5, AEM5 |
Yes, provided your barrel has 1/2×28 threads, an outside diameter of .75" or less, and at least 2.05" of exposed barrel measured from the shoulder. Most standard carbine and rifle uppers meet these specs without modification.
The OTB Flash Hider is designed for OPS 12th-pattern suppressors, including Otter Creek Labs' OCM5 and AEM5 models.
No. The OTB Flash Hider threads directly onto any 1/2×28 barrel without custom collars or barrel work. If your barrel already has the correct thread pitch and specifications, installation is straightforward.
The supplier facts provided specify this product in black nitride. The black nitride coating offers corrosion resistance and a finished appearance, while maintaining the durability of the underlying H900 17-4 stainless steel.
Otter Creek Labs
The Otter Creek Labs Ops/AE OTB Flash Hider is a one-piece adapter that combines a suppressor mount with an integral muzzle device, designed to streamline your AR setup while keeping things clean and functional. Built from H900 heat-treated 17-4 stainless steel and finished in black nitride, this mount lets you attach OPS 12th-pattern suppressors—including OCM5 and AEM5 models—to any standard 1/2×28 threaded barrel without custom work. If you run an AR with a mid-length or shorter barrel that needs a suppressor mount and a flash hider in one package, this is a no-fuss solution that eliminates the need for custom collars or barrel modifications.
The real advantage here is simplicity. You're not buying a basic mount and a separate muzzle device; you get both functions in a single, robust assembly. The H900 17-4 steel is forged to handle the pressures of direct-impingement and piston guns alike, and the black nitride coating resists corrosion without adding bulk. Otter Creek Labs earned a reputation for precision suppressor mounts, and this OTB version carries that same engineering to a wider range of shooters who need the flexibility of OPS 12th compatibility without a gunsmith visit.
Compatibility is straightforward: your barrel needs 1/2×28 threads, an outside diameter of .75" or less, and a minimum of 2.05" of exposed barrel measured from the shoulder. That covers most standard carbine and rifle uppers. Whether you're building a recce rifle, a suppressed hunting gun, or a duty-focused AR, this adapter sits between your barrel and suppressor with zero guesswork.
| Brand | Otter Creek Labs |
| Material | H900 heat-treated 17-4 stainless steel |
| Finish | Black nitride |
| Muzzle Thread | 1/2×28 |
| Maximum Barrel OD | .75" |
| Minimum Exposed Barrel Length | 2.05" (measured from shoulder) |
| Suppressor Pattern | OPS 12th |
| Compatible Suppressors | OCM5, AEM5 |
Yes, provided your barrel has 1/2×28 threads, an outside diameter of .75" or less, and at least 2.05" of exposed barrel measured from the shoulder. Most standard carbine and rifle uppers meet these specs without modification.
The OTB Flash Hider is designed for OPS 12th-pattern suppressors, including Otter Creek Labs' OCM5 and AEM5 models.
No. The OTB Flash Hider threads directly onto any 1/2×28 barrel without custom collars or barrel work. If your barrel already has the correct thread pitch and specifications, installation is straightforward.
The supplier facts provided specify this product in black nitride. The black nitride coating offers corrosion resistance and a finished appearance, while maintaining the durability of the underlying H900 17-4 stainless steel.
