Geissele AR-15 Super Modular Rail MK14 M-LOK - 15" Black
$375.00 at Brownells · 4 stores
In stock
Mk4 10" Federal Super Modular Rail M-LOK DDC
Geissele Automatics · Rails & Handguards
No ratings yetBest price
$370.40at Kentucky Gun Co
In stock checked Oct 21, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Kentucky Gun Co Best price | $370.40checked Oct 21, 2026 | In stock | Buy at Kentucky Gun Co | |
| Brownells | $425.00checked Oct 21, 2026 | In stock | Buy at Brownells | |
| OpticsPlanet | $425.00Salechecked Oct 21, 2026 | In stock | Buy at OpticsPlanet | |
| Ammunition Depot | $425.00checked Oct 21, 2026 | In stock | Buy at Ammunition Depot | |
| Battlehawk Armory | $351.08Salechecked Oct 21, 2026 | Check store | Buy at Battlehawk Armory | |
| Palmetto State Armory | $425.99checked Oct 21, 2026 | Check store | Buy at Palmetto State Armory |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $370.40 at Kentucky Gun Co. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Ammunition Depot | $425.00 | $425.00 | $425.00 |
| Battlehawk Armory | $351.08 | $351.08 | $351.08 |
| Brownells | $425.00 | $425.00 | $425.00 |
| Kentucky Gun Co | $370.40 | $370.40 | $370.40 |
| OpticsPlanet | $425.00 | $425.00 | $425.00 |
| Palmetto State Armory | $425.99 | $425.99 | $425.99 |
Since Sep 27, 2026.
About this part
The Mk4 10" Federal Super Modular Rail M-LOK DDC is a 1E+1" AR-15 handguard from Geissele Automatics. It's sold by 6 stores (4 in stock), from $351.08 to $425.99. The lowest in-stock price in the last 30 days was $370.40 at Kentucky Gun Co.
Fits and works with
- Handguard length
- 1E+1" · Barrels
Specifications
- Manufacturer
- Geissele Automatics
- Platform
- AR-15
- Length
- 10"
- Attachment
- M-LOK
From the manufacturer
This is the same rail used to fullfill contracts for the Federal Bureau of Investigation (FBI). Its strength, modularity and M-Lok compatibility gives users the capabilities needed to successfully complete the mission at hand. These rails are purpose-built and feature integrated M1913 picatinny rail sections at the fore of the rail in the 3, 6 and 9 o'clock positions. The Picatinny rail on the bottom of the rail, or the 6 o'clock position, is elongated in this version to accommodate accessories more comfortably. Maximum venting for heat dissipation also dramatically reduces the rails overall weight, while maintaining its same strong and rigid platform. The MK4 M-LOK rail f Mfg: Geissele Automatics
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