SKU: OCL-202
The Otter Creek Labs OCL M4 Collar Raw Heat Treat is a precision-engineered locating collar designed for M4-spec barrels, ideal for operators and gunsmiths who require timing accuracy and repeatable zero retention. This collar ensures that your suppressor indexes consistently every time it is mounted or remounted, addressing alignment and consistency challenges that can affect accuracy and reliability.
Manufactured from aerospace-grade 17-4 precipitation-hardened stainless steel, the collar is designed to withstand high-round-count conditions while maintaining precise tolerances. The raw heat-treated finish contributes to its durability and corrosion resistance, making it suitable for various suppressor-mounting applications.
The OCL M4 Collar is compatible with Ops Inc 12 Model suppressors, Otter Creek Labs AEM5 and OCM5 platforms, and any M4-spec barrel threading system. Law enforcement armories, military units, and civilian precision shooters can rely on this collar to eliminate timing drift and enhance their shooting performance.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.