The M-rail comes with three aluminum picatinny rail sections* that can be screwed to the top, bottom, and sides of the handguard. This allows you to keep your handguard slim and light weight or you can customize the sections on your handguard for any additional accessories.
* Comes with one 12-slot and two 5-slot interchangeable picatinny rail sections. Extra rail sections and Quick-Disconnect Sling Mount sold separately. Not recommended for upper assemblies with barrels shorter than 12.5 inches.
- 11" Free-floating, monolithic rail system for POF-USA Upper Receivers.