Description
Geissele Automatics Super Modular Rail (SMR) MK4 is a railed forend made for M-LOK mounting. It has integrated M1913 Picatinny rail sections at the fore of the rail in the 3, 6, and 9 o’clock positions. The MK4 also includes Geissele’s proprietary 2 in long barrel nut for the system and is finished in black.
Key features
- Integrated M1913 Picatinny rail sections at 3, 6, and 9 o’clock
- M-LOK mounting style
- Proprietary 2 in long barrel nut
- Black finish
Fit notes
Gas block is not included. Barrel nut wrench is sold separately.
| Finish | Black |
|---|---|
| Length | 9.3 in |
| Rail system | M-LOK with integrated M1913 Picatinny sections |
| Barrel nut | Proprietary 2 in long barrel nut |
