Interface System FSP Ris II Handguard 12" For M4A1 FDE
$542.00 at MidwayUSA · 9 stores
In stock
Interface System Mk 18 Ris II Handguard 9.55" For M4A1 FDE
Daniel Defense · Rails & Handguards
No ratings yetBest price
$542.00at Brownells
In stock checked Nov 10, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells Best price | $542.00checked Nov 10, 2026 | In stock | Buy at Brownells | |
| OpticsPlanet | $542.00Salechecked Nov 10, 2026 | In stock | Buy at OpticsPlanet | |
| Ammunition Depot | $542.00checked Nov 10, 2026 | In stock | Buy at Ammunition Depot | |
| MidwayUSA | $542.00checked Nov 10, 2026 | In stock | Buy at MidwayUSA | |
| Kentucky Gun Co | $542.00checked Nov 10, 2026 | In stock | Buy at Kentucky Gun Co | |
| Battlehawk Armory | $469.91Salechecked Nov 10, 2026 | Check store | Buy at Battlehawk Armory | |
| AR15Discounts | $485.00checked Nov 10, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $485.00checked Nov 10, 2026 | Check store | Buy at Dirty Bird | |
| Palmetto State Armory | $542.99checked Nov 10, 2026 | Check store | Buy at Palmetto State Armory | |
| GunMag Warehouse | $516.99checked Oct 25, 2026 | Out of stock | Buy at GunMag Warehouse |
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: $516.00 at Kentucky Gun Co. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $485.00 | $485.00 | $485.00 |
| Ammunition Depot | $542.00 | $542.00 | $542.00 |
| Battlehawk Armory | $469.91 | $420.83 | $469.91 |
| Brownells | $542.00 | $542.00 | $542.00 |
| Dirty Bird | $485.00 | $485.00 | $485.00 |
| GunMag Warehouse | — | $516.99 | $516.99 |
| Kentucky Gun Co | $542.00 | $516.00 | $542.00 |
| MidwayUSA | $542.00 | $542.00 | $542.00 |
| OpticsPlanet | $542.00 | $542.00 | $542.00 |
| Palmetto State Armory | $542.99 | $516.99 | $542.99 |
Since Sep 27, 2026.
About this part
The Interface System Mk 18 Ris II Handguard 9.55" For M4A1 FDE is a 9.55" AR-15 handguard from Daniel Defense. It's sold by 10 stores (5 in stock), from $469.91 to $542.99. The lowest in-stock price in the last 30 days was $516.00 at Kentucky Gun Co.
Fits and works with
- Gas system
- Carbine · Handguards
- Handguard length
- 9.55" · Barrels
Specifications
- Manufacturer
- Daniel Defense
- Color
- Flat Dark Earth
- Platform
- AR-15
- Gas system
- Carbine
- Length
- 9.55"
- Attachment
- M1913 Picatinny
From the manufacturer
A machined aluminum multi-rail handguard specifically designed for the Special Operations Command (SOCOM) M4A1 carbine, the RIS II enables installation of an M203 40mm grenade launcher, while allowing the barrel to free float. The M203 attaches to the bottom rail quickly and easily, without special tools or additional parts. Full-length, MIL-STD 1913 Picatinny rails provide plenty of space to add other mission-specific accessories as needed. Top rail is designed to mate continously with the receiver rail. All models come with all required mounting hardware, instructions, and three molded polymer, snap-on rail covers. RIS II requires the installation of a low-profile gas block. FSP RIS II Mfg: Daniel Defense
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