The Geissele Automatics MK4 Federal is a super modular rail in stunning black, known for its strength, modularity, and M-LOK compatibility. This 10" rail system, without included gas block or barrel nut wrench, offers maximum venting for heat dissipation and allows easy attachment of accessories, making it the ultimate choice for fulfilling contracts for the FBI.
Specs
| Model No. | GEI05-430B |
| Model | MK4 Federal |
| Manufacturer | Geissele Automatics |
| Color | Black |
