Geissele AR-15 Super Modular Rail MK14 M-LOK - 15" Black
$375.00 at MidwayUSA · 5 stores
In stock
Best price
$375.00at Brownells
Out of stock checked Oct 2, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells Best price | $375.00checked Oct 2, 2026 | Out of stock | Buy at Brownells | |
| OpticsPlanet | $375.00Salechecked Oct 2, 2026 | Out of stock | Buy at OpticsPlanet | |
| MidwayUSA | $375.00checked Oct 2, 2026 | Out of stock | Buy at MidwayUSA |
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
Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $375.00 | $375.00 | $375.00 |
| MidwayUSA | $375.00 | $375.00 | $375.00 |
| OpticsPlanet | $375.00 | $375.00 | $375.00 |
Since Sep 27, 2026.
About this part
The Mk 4 15" M-LOK Super Modular Rail, BLK is a 15" AR-15 handguard from Geissele Automatics. It's sold by 3 stores, all at $375.00.
Fits and works with
- Handguard length
- 15" · Barrels
Specifications
- Manufacturer
- Geissele Automatics
- Color
- Black
- Platform
- AR-15
- Length
- 15"
From the manufacturer
The Super Modular Rail 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 and 9 o’clock positions. 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 features M-LOK slots at the 3, 6 and 9 o’clock positions as well as the upper 45° quadrants. This allows the user to keep the weight on the rail system down, while keeping the modularity and versatility to attach accessories as necessary.The rails include a .750" low profile stainless steel Geissele Gas Block.
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