Otter Creek Arms Ocl-302 Spr Collar Raw Heat Treat
The Otter Creek Arms OCL-302 SPR collar is a precision locating component engineered for shooters who run suppressed rifle setups. This short SPR collar mates with Ops Inc 12 model, AEM5, and OCM5 suppressors, delivering the rock-solid indexing your suppressor needs for consistent performance and reliability downrange. Built from H900 heat-treated 17-4 stainless steel and finished with black nitride, the OCL-302 handles the thermal and mechanical demands of suppressed fire while maintaining the tight tolerances that matter in precision shooting.
If you're building or maintaining a suppressed rifle, the quality of your suppressor mounting hardware directly affects how your system performs. A solid locating collar ensures your suppressor stays where it should be, shot after shot. Otter Creek Arms manufactures components that respect both the engineering and the user—no shortcuts, no guesswork.
The raw heat-treat gold finish pairs durability with understated aesthetics. This collar is a critical detail for shooters who demand reliability from their suppressor systems and understand that the small parts matter as much as the big ones.
Key Features
- Short SPR locating collar design for precise suppressor indexing
- H900 heat-treated 17-4 stainless steel construction
- Black nitride finish for corrosion resistance and durability
- Compatible with Ops Inc 12 model, AEM5, and OCM5 suppressors
- Raw heat-treat gold finish
Specifications
| Manufacturer | Otter Creek Arms LLC |
| Product Type | SPR Locating Collar |
| Material | 17-4 Stainless Steel (H900 heat treat) |
| Finish | Black Nitride with Raw Heat-Treat Gold |
| Compatibility | Ops Inc 12 model, AEM5, OCM5 suppressors |
Frequently Asked Questions
Which suppressors does the OCL-302 collar work with?
The OCL-302 SPR collar is compatible with Ops Inc 12 model, AEM5, and OCM5 suppressors. Always verify your suppressor model before purchasing to ensure proper fit and function.
What material is this collar made from?
The OCL-302 is machined from 17-4 stainless steel and heat-treated to H900 specifications for strength and durability. It features a black nitride finish with a raw heat-treat gold appearance for corrosion resistance.
Why does suppressor mounting hardware matter?
A quality locating collar ensures your suppressor indexes consistently and securely on your rifle. This precision directly affects suppressor performance, concentricity, and reliability during use. Cheap or loose mounting hardware can compromise your entire suppressed system.

