Mk1 Standard Inserts Accessory Rails ALL SALES ARE FINAL**

ALL SALES ARE FINAL**

Intrinsically safe rated

Seamlessly integrates with NVGs and other eye protection products

Lightweight cellular Protium™ foam pad design for maximum movement and protection

Rugged and comfortable

Mk1 Standard Inserts Accessory Rails ALL SALES ARE FINAL**While Ops Core Mk1 Performance Protective Eyewear is durable, sometimes severe elements and use can take its toll. To keep your eyewear operating at peak performance, be sure to replace worn out frame inserts. Ops Core Mk1 Standard Inserts securely and interchangeably mount your Mk1 lenses in the frames. Should your mission require it, you can easily add additional protection from wind and dust with our Ops Core Mk1 Foam Inserts. All inserts provide a