The Super Modular Rail (SMR) MK4 M-LOK is a 10.5-inch handguard from Geissele Automatics designed for AR-15 platforms. It uses Magpul’s M-LOK interface and includes integrated Picatinny rail sections at the fore in the 3, 6 and 9 o’clock positions. Extensive venting reduces weight while maintaining a rigid platform for mounted accessories. The rail is finished in hardcoat-anodized black aluminum.
Key Specifications
- The length is 10.5 inches.
- The finish is Hardcoat Anodized.
- The material is Aluminum.
- The color is Black.
- The mounting interface is M-LOK.
- The model is Super Modular Rail (SMR) MK4.
- Compatible platform is AR-15.
- It features integrated Picatinny sections at 3, 6 and 9 o’clock and the upper 45-degree quadrants.
- The product type is Handguard.
Built for users who prioritize modularity and durability, the SMR MK4 provides a secure, lightweight mounting platform for optics, lights, grips, and other accessories. Its combination of integrated Picatinny sections and M-LOK attachment points makes it adaptable to a wide range of configurations while retaining a clean, functional profile suited to practical field and range use.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




