
Availability: In Stock
Current Stock: Out of stock
The Otter Creek Arms OCL-202 M4 collar is a precision locating component built for shooters who demand exact barrel fitment on M4 platform rifles. This raw heat-treat collar ensures your barrel seats consistently in the receiver, critical for maintaining zero and reliability in both duty and competition applications. Whether you're running a precision rifle build or maintaining a service weapon, proper barrel location makes the difference between acceptable and exceptional accuracy.
Machined from 17-4 stainless steel and treated to H900 specification, the OCL-202 is engineered for durability in demanding conditions. The raw heat-treat finish leaves the steel in its working state—no cosmetic coating to wear through or interfere with a tight, controlled fit. This is purpose-built hardware for gunsmiths and serious builders who understand that tolerances matter.
The OCL-202 is designed to work with M4 spec barrels and is compatible with Ops Inc 12th Model AEM5 and OCM5 suppressors, making it a logical choice if you're running those systems and need to ensure your barrel sits exactly where it should. Installation and use should follow manufacturer guidance and any applicable builder or armorer instructions for your specific rifle platform.
| Product | Otter Creek Arms OCL-202 M4 Collar |
| Material | 17-4 Stainless Steel |
| Heat Treatment | H900 |
| Finish | Raw Heat Treat |
| Barrel Compatibility | M4 Spec |
| Suppressor Compatibility | Ops Inc 12th Model AEM5, OCM5 |
The OCL-202 is designed for M4 spec barrels and is compatible with Ops Inc 12th Model AEM5 and OCM5 suppressors.
The OCL-202 is machined from 17-4 stainless steel and heat-treated to H900 specification for durability and strength.
The raw heat-treat finish leaves the steel in its working state without cosmetic coating, ensuring a tight, precision fit without any interference. This is ideal for applications where exact tolerances and barrel location are critical.

SKU: 144598563





Availability: In Stock
Current Stock: Out of stock
The Otter Creek Arms OCL-202 M4 collar is a precision locating component built for shooters who demand exact barrel fitment on M4 platform rifles. This raw heat-treat collar ensures your barrel seats consistently in the receiver, critical for maintaining zero and reliability in both duty and competition applications. Whether you're running a precision rifle build or maintaining a service weapon, proper barrel location makes the difference between acceptable and exceptional accuracy.
Machined from 17-4 stainless steel and treated to H900 specification, the OCL-202 is engineered for durability in demanding conditions. The raw heat-treat finish leaves the steel in its working state—no cosmetic coating to wear through or interfere with a tight, controlled fit. This is purpose-built hardware for gunsmiths and serious builders who understand that tolerances matter.
The OCL-202 is designed to work with M4 spec barrels and is compatible with Ops Inc 12th Model AEM5 and OCM5 suppressors, making it a logical choice if you're running those systems and need to ensure your barrel sits exactly where it should. Installation and use should follow manufacturer guidance and any applicable builder or armorer instructions for your specific rifle platform.
| Product | Otter Creek Arms OCL-202 M4 Collar |
| Material | 17-4 Stainless Steel |
| Heat Treatment | H900 |
| Finish | Raw Heat Treat |
| Barrel Compatibility | M4 Spec |
| Suppressor Compatibility | Ops Inc 12th Model AEM5, OCM5 |
The OCL-202 is designed for M4 spec barrels and is compatible with Ops Inc 12th Model AEM5 and OCM5 suppressors.
The OCL-202 is machined from 17-4 stainless steel and heat-treated to H900 specification for durability and strength.
The raw heat-treat finish leaves the steel in its working state without cosmetic coating, ensuring a tight, precision fit without any interference. This is ideal for applications where exact tolerances and barrel location are critical.
SKU: 144598563
