Geissele's ultra-rugged Super Modular Rail MK4 in black aluminum combines integrated Picatinny rails at 3, 6, and 9 o'clock with M-LOK slots for maximum modularity and minimal weight.
The Geissele MK4 Super Modular Rail represents the pinnacle of AR-platform handguard design. Built for shooters who demand both versatility and durability, this 10.5" rail delivers the ruggedness Geissele is known for while embracing modern attachment standards.
This is the handguard only. You'll need a compatible barrel nut wrench (sold separately) and your own gas block to complete your build. The modular design gives you virtually unlimited customization options, making it ideal for everything from precision rifles to tactical builds.
Geissele Automatics has built a reputation for uncompromising quality and attention to detail. The MK4 Super Modular Rail continues that tradition with a platform that grows with your needs.