Otter Creek Labs - Gordon Collar Assembly

These will be a “limited” production item, with one batch of 200 units made once per year. As of 5-9-22 the 2022 batch is sold out. Look for the next batch, Q1 of 2023.

The outer clamp is made from 7075 aluminum with a type 3 hard coat anodize and the inset is made from H900 heat treated 17-4 stainless steel and black nitride coated.

These are made to be used with 12.5” GOVT profile barrels with an FSP/FSB in conjunction with your OPS 12, AEM5 or OCM5. Your barrel must measure .732-.734 where the collar sits in order to have proper alignment.

With the Gordon collar if you’re using a muzzle brake do not use a crush washer, use a shim kit instead. If you’re using the otter creek flash hider, just thread it down to the shoulder with no shims or crush washer.

Traditionally, Gordon collars have been made for 12.7 inch barrels. Who makes a 12.7 inch barrel? Good question. Your only option was to have a custom barrel made or get a longer barrel and have a gunsmith chop it to 12.7 inches. So we just skipped all that jazz and shortened the whole assembly by .2 and boom, a Gordon collar for 12.5” GOVT profile off the shelf barrels. You’re welcome.