Geissele 10.5" M-LOK MK14 Black Super Modular Rail 05-1658B

Geissele 10.5" M-LOK MK14 Black Super Modular Rail 05-1658B takes the MK14's whole design premise - a noticeably slimmer diameter than Geissele's other rail lines - and applies it to a length built for shorter-barreled carbines and SBRs.

Most rails this compact end up either flimsy or bulky trying to compensate for the shorter length. This one doesn't, mostly because the MK14 was engineered from the ground up around a reduced 2.02" height and 1.27" inner diameter, not scaled down from a bigger rail after the fact. This Geissele SMR MK14 is machined from 7000-series aluminum and locks to the receiver through Geissele's proprietary 2.25" barrel nut, the same long-contact mounting system used across the whole Super Modular line - it's why the rail stays true even after you've pulled it off a few times for cleaning or maintenance.

M-LOK slots run at 3, 6, and 9 o'clock, and a full-length Picatinny top rail handles optics without issue. Weight comes in at 8.7 ounces bare, 11 with the barrel nut — light in absolute terms, and even more noticeable given how slim this Geissele MK14 10.5 rail feels in hand compared to a standard-diameter option at the same length.

Key Features:

• 10.5" 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: 8.7 oz bare, 11 oz w/ barrel nut
• Black finish
• Fits mil-spec AR-15 upper receivers

This 10.5 M LOK handguard is the pick for anyone building a compact carbine who's tired of bulky handguards eating up their support-hand grip.