The Otter Creek Labs OCM6 is a 6mm-bore, OPS/AE-pattern suppressor: the modern version of the OPS Inc 12th Model and AEM5 cans that defined the MK12 look, and the second generation of OCL's own OCM5. The outer tube is machined titanium and the core is printed 718 Inconel, which makes it 24% (5 oz) lighter than the original OPS 12/AEM5 without giving up strength or erosion resistance. 2.6 inches of it reflexes back over the barrel, so it adds only 6.2 inches to the rifle.
The big change from the OCM5 is back pressure. The old design was very quiet at the muzzle but pushed gas back at the shooter; the OCM6 gives up a touch of muzzle suppression to be quieter at the shooter's ear with far less port pop. The 6mm bore means 6 ARC, 6 Dasher, 6 Creedmoor and 243 are all fine, and 5.56 still works. Every OPS/AE/OCM5 mount you already own carries over. If you are building a MK12, Gordon or 6 ARC rifle and do not want to get gassed out, this is the can. Made in London, Kentucky, with a lifetime warranty.
Why it stands out
- Titanium tube, printed 718 Inconel core: 16 oz, 24% lighter than OPS 12/AEM5
- Over-the-barrel design adds only 6.2" to the rifle
- Much lower back pressure than the OCM5 and the originals
- 6mm bore: 5.56, 6 ARC, 6 Dasher, 6 Creedmoor, 243
- Uses OPS 12 / AEM5, OTB, Midway and PTB mounts
- Lifetime warranty
Specifications
| Caliber | 6mm and 5.56 NATO / 223 Rem |
|---|---|
| Overall length | 8.8" |
| Length added to the rifle | 6.2" (2.6" reflexed over the barrel) |
| Weight | 16 oz |
| Material | Machined titanium tube, printed 718 Inconel core |
| Mount | OPS 12 / AEM5 pattern: OTB, Midway (MWA) and PTB adapters, or an OPS/AE muzzle device with a locating collar |
| Finish | Black |
| Part number | OCM6 |
| UPC | 664533654453 |
In the box
- Suppressor
- Stickers
Compatibility
This is not a HUB can. It mounts the OPS/AE way: either a one-piece adapter on a 1/2x28 or 5/8x24 barrel (OTB Flash Hider, OTB Muzzle Brake, OTB Adapter, Midway Adapter or PTB Adapter, depending on how much barrel is exposed) or an OPS/AE Muzzle Brake / OPS/AE Flash Hider with an M4 Collar or SPR Collar on an M4 or SPR profile barrel. Call us with your barrel and we will put the right set together.
Buying a suppressor from Guns 2 Ammo
Suppressors are NFA items and are serial-number tracked. Order online or in store, then complete your transfer at our Mesa shop, either as a registered eForm 4 or same day on a Form 4473. Buy it from us and there is no transfer fee. We explain both options, fees and timelines on our NFA & Class III page.
Outside Arizona? We can ship to your local SOT dealer to complete the transfer. Not available in CA, DC, DE, HI, IL, MA, NJ, NY or RI.
Questions? Call (602) 715-2677.
| Manufacturer | Otter Creek Labs |
| Model | OCM6 |
| Caliber | 6mm / 5.56 NATO |
| Type | Silencer |
| Finish | Black |
| Material | Titanium / Inconel 718 |
| Size/Length | 8.8" |
| Item Weight | 16 oz |
| Mount Type | OPS/AE Mount |