Geissele 9.3" M-LOK MK14 Black Super Modular Rail 05-578B

Geissele 9.3" M-LOK MK14 Black Super Modular Rail 05-578B is the shortest MK14 option, taking Geissele's already-slim rail design down to a length built for pistol builds and short-barreled configurations.

At 2.02" tall with a 1.27" inner diameter, this Geissele Super Modular Rail MK14 shares the same reduced cross-section that defines the whole MK14 line - a real difference in support-hand grip compared to the standard MK16 or MK4 rails. It's machined from 7000-series aluminum and mounts through the same 2.25" Geissele barrel nut design used across the lineup, so alignment stays true even after repeated disassembly for cleaning.

M-LOK slots run at 3, 6, and 9 o'clock, and a full-length Picatinny top rail covers optics and iron sights. This Geissele 9.3 rail comes in at just 8 ounces bare, 9.6 with the barrel nut - the lightest length in the entire MK14 lineup, which matters a lot on a build where every ounce up front changes the balance.

Key Features:

• 9.3" free-float length, full-length Picatinny top rail
• M-LOK slots at 3, 6, 9 o'clock
• 7000-series aluminum, Type III hardcoat anodized
• Proprietary 2.25" Geissele barrel nut
• Height 2.02", inner diameter 1.27", outer diameter 1.52"
• Weight: 8 oz bare, 9.6 oz w/ barrel nut
• Black finish
• Fits mil-spec AR-15 upper receivers

This Geissele MK14 Rail hands pistol and SBR builders the lightest, slimmest option Geissele makes without cutting any corners on rigidity.