The Geissele MK4 Federal Rail 10in M-LOK Handguard for AR-15, Olive Drab Green is a handguard for AR-15.
Geissele's Super Modular MK4 Rail is used by the Federal Bureau of Investigation due to its strength, modularity, and M-LOK compatibility. It features M1913 picatinny rails in the 6 o'clock and 12 o'clock positions, as well as shorter M1913 picatinny rails in the front 3 o'clock and 9 o'clock positions.
A handguard protects your support hand from barrel heat and gives you room to mount lights, grips and other accessories. Check the length and fitting type against your rifle — drop-in handguards fit between the delta ring and handguard cap, while free-float handguards use their own barrel nut.
How It Compares
Also compare the MK4 Federal Rail, MK4, MLOK, AR15, 10in, MK16 Super Modular Rail, AR15 Handguard and MK18 Super Modular Rail for AR-15, ARCA-Swiss Handguard. Browse all handguards & Rail Sections and the full Geissele Automatics range. New to this? Read our guide: How to Choose an AR-15 Handguard.
Ideal For
- AR-15 builds that suit a 10in M-LOK handguard in Olive Drab Green
- Shooters who want M1913 rail at 12 and 6 o'clock plus short front rails at 3 and 9
- Builds that want good barrel ventilation from a lightweight rail
Key Features
- M1913 picatinny rails in the 3, 6, 9, & 12 o'clock positions
- M-LOK slots in the 3, 6, and 9 o'clock positions & in the upper 45 quadrants
- Lightweight design
- Maximum ventilation on the barrel
- Rail
- MLOK
- AR15
- 10"
Compatibility & Fitment
AR-15. Not sure it fits? Contact us before you order and we will check for you.
Technical Specifications
Brand | Geissele Automatics |
Type | Handguard |
Model | MK4 |
Description | M-LOK |
Size | 10" |
Platform | AR-15 |
Color | Olive Drab Green |
MPN | 05-430ODG |
UPC | 817953027936 |
US Shipping & Support
Genuine Geissele Automatics, brand new and covered by the manufacturer's warranty. Shipping is free on US orders of $99 or more, and smaller orders ship from $6.95. Questions about fit, mounting or which option suits your setup? Our team is glad to help before and after your purchase.
Frequently Asked Questions
What does the Automatics MK4 Federal Rail fit?
AR-15.
Is this a genuine Geissele Automatics product?
Yes. It is a new, genuine Geissele Automatics product sourced through an authorized US distributor.
How much is shipping?
Shipping is free on US orders of $99 or more. Orders under $99 ship at a flat rate from $6.95 to $9.95, depending on the order total.
