- Geissele Super Modular Rail (SMR) MK4 Handguard
- 10" length, M-LOK compatible
- Full-length Picatinny top rail
- Ultra-lightweight design
- Same specification as FBI contract handguards
- Barrel nut wrench required for installation (sold separately)
- Gas block not included
- Color: Black
- MPN: 05-430B
This is the same rail used to fulfill contracts for the Federal Bureau of Investigation (FBI), prized for its strength, modularity, and M-LOK compatibility.
