The Otter Creek Labs M4 Collar is the locating collar that centers an OPS/AE-pattern over-the-barrel suppressor on your barrel. This one is cut for M4-profile barrels (the step behind the gas block on a standard government or M4 barrel). Use it with an OPS/AE muzzle device when you are not running a one-piece OTB adapter. Machined from H900 heat-treated 17-4 stainless, in Black Nitride.
Will it fit?
| Works with | Otter Creek Labs OCM6 and OCM5, OPS Inc 12th Model and Allen Engineering AEM5 mounted with an OPS/AE Muzzle Brake or OPS/AE Flash Hider |
|---|---|
| Your barrel thread | M4 / government profile barrel behind the muzzle threads |
| You also need | An OPS/AE Muzzle Brake or OPS/AE Flash Hider in your barrel thread; a OPS/AE/OC Thread Protector is handy when the can is off |
| Does NOT work with | One-piece OTB Flash Hider, OTB Muzzle Brake, OTB Adapter, Midway Adapter or PTB Adapter adapters (they need no collar); HUB suppressors; SPR-profile barrels (use the SPR Collar) |
Specifications
| Manufacturer | Otter Creek Labs |
|---|---|
| Part number | OCL-201 |
| Fits | M4-profile barrels, OPS 12 / AEM5 / OCM5 / OCM6 suppressors |
| Material | H900 heat-treated 17-4 stainless steel |
| Finish | Black Nitride |
| UPC | 664533659038 |
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 | M4 Collar |
| Type | Parts |
| Finish | Black Nitride |
| Material | Stainless Steel |
| Mount Type | OPS/AE Mount |