Ocl M4 Collar Black

The Ocl M4 Collar Black is a precision-engineered suppressor locating collar designed for shooters and operators who demand exacting tolerance and repeatability in their suppressor mounting systems. Built by Otter Creek Labs, this collar is specifically compatible with M4 spec barrels and select suppressors, ensuring consistent baffle stack alignment and minimal point-of-impact shift between suppressed and unsuppressed fire.

Manufactured from H900 heat-treated 17-4 stainless steel and finished in a durable black nitride coating, the Ocl M4 Collar Black resists corrosion and wear in harsh operational environments while maintaining dimensional integrity across thermal cycles. The nitride finish provides superior hardness compared to standard black oxide, protecting against carbon fouling and mechanical degradation caused by repeated suppressor attachment and removal.

Operators relying on fast-attach suppressor systems will benefit from the Ocl M4 Collar Black's design, which enhances the reliability of suppressor mounting. This minimalist component, weighing just 0.13 lbs and measuring 1 × 1 × 2 inches, is engineered for function, making it an essential addition to any tactical carbine or precision 5.56 NATO build.