AR-15 Upper Parts

Geissele Automatics MK16 M-LOK AR-15 Super Modular Rail The Geissele Super Modular Rail MK16 offers unmatched performance for the most demanding shooters. Mounted to your AR-15 upper using the updated version of the proven Geissele Barrel Nut design, the...

Geissele Super Modular Rail MK4 M-LOK Handguard The Super Modular Rail (SMR) MK4 M-LOK is Geissele's ultra-lightweight M-LOK option. These rails are purpose-built and feature integrated M1913 picatinny rail sections at the fore of the rail in the 3, 6...

Geissele Super Modular Rail MK8 M-LOK Handguard The Super Modular Rail (SMR) MK8 M-LOK is Geissele's ultra-modular model. The SMR MK8 is one of the first rails available to utilize the Magpul M-LOK technology. These rails are designed to give the user...

Geissle Super Modular Rail MK14 M-LOK Handguard The MK14 is the latest entry to the Geissele line up of Super Modular Rails. The new handguard design offers a smaller diameter and overall height to create a slimmer package. Included with the MK14 Super...