The Otter Creek Labs OTB Muzzle Brake is a one-piece over-the-barrel adapter with a muzzle brake built in: the simplest way to put an OPS 12, AEM5, OCM5 or OCM6 suppressor on a standard rifle. It mounts to any 5/8x24 barrel that is .75 inch or less in diameter with at least 2.05 inches of exposed barrel measured from the shoulder, with no custom collar and no barrel work. Machined from H900 heat-treated 17-4 stainless, in Black Nitride.
It ships with a shim kit, and shims are the only approved way to time it. Do not use a crush washer: it voids the warranty. The brake costs a little more than the OTB Flash Hider because of the shim kit; the flash hider does not need timing.
Will it fit?
| Works with | Otter Creek Labs OCM6 and OCM5, OPS Inc 12th Model and Allen Engineering AEM5 |
|---|---|
| Your barrel thread | 5/8x24, barrel diameter .75" or less, at least 2.05" exposed from the shoulder |
| You also need | Nothing else; a OPS/AE/OC Thread Protector is handy when the can is off |
| Does NOT work with | HUB suppressors; barrels thicker than .75" or with less than 2.05" exposed (use the Midway Adapter at 1.45" or the PTB Adapter); barrels threaded other than 5/8x24 |
Specifications
| Manufacturer | Otter Creek Labs |
|---|---|
| Part number | OCL-843 |
| Type | One-piece OTB adapter with muzzle brake |
| Barrel thread | 5/8x24 |
| Barrel requirements | OD .75" or less, 2.05" or more exposed from the shoulder |
| Material | H900 heat-treated 17-4 stainless steel |
| Finish | Black Nitride |
| Timing | Shim kit included (no crush washer) |
| UPC | 664533680391 |
This is a mount part, not a suppressor, so it ships like any other accessory with no NFA paperwork. We are happy to ship out of state.
Not sure it fits your can or barrel? Call (602) 715-2677 with your suppressor model and barrel thread and we will confirm before you buy.
| Manufacturer | Otter Creek Labs |
| Model | OTB Muzzle Brake |
| Type | Parts |
| Finish | Black Nitride |
| Material | Stainless Steel |
| Mount Type | 5/8x24 |