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DANIEL DEFENSE M4A1 RIS II Rail Interface System II (01-004-08001-006)

DANIEL DEFENSE M4A1 RIS II Rail Interface System II (01-004-08001-006) - Handguard for AR-15 - view 1
DANIEL DEFENSE M4A1 RIS II Rail Interface System II (01-004-08001-006) - Handguard for AR-15 - view 2
DANIEL DEFENSE M4A1 RIS II Rail Interface System II (01-004-08001-006) - Handguard for AR-15 - view 3
DANIEL DEFENSE M4A1 RIS II Rail Interface System II (01-004-08001-006) - Handguard for AR-15 - view 4
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Daniel Defense

Overview

The DANIEL DEFENSE M4A1 RIS II Rail Interface System II (01-004-08001-006) is a handguard. Compare prices from multiple merchants and find the best deal.

Specifications

MPN01-004-08001-006
FinishCerakote
ColorFDE
Mounting InterfacePicatinny
Construction TypeFree-Float

Available Merchants(3)

Prices checked

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Primary Arms logo
Primary Arms
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$516
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KY Gun Company logo
KY Gun Company
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$516
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Brownells logo
Brownells
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$542
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August 2026 on GunPartPicker

DANIEL DEFENSE M4A1 RIS II Rail Interface System II (01-004-08001-006) ranked #86 of the 243 handguards builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #107 of the 683 handguards builders have added.

It was in stock most days in August 2026, and today all 3 retailers we track have it in stock. The best price crept up from $516 to $542 over August 2026. Buying today, the lowest price is $516 at Primary Arms.

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Frequently Built With

The part most often added in each category by the 7 builds that include this one

Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green

Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green

Charging Handle$155in 2 builds
AR-15 Carbon Fiber Barrels 223 Wylde - 223 Wylde 1-7 Twist 11.5'''' Carbon Fiber Barrel

AR-15 Carbon Fiber Barrels 223 Wylde - 223 Wylde 1-7 Twist 11.5'''' Carbon Fiber Barrel

Barrel$899 · out of stockin 2 builds
SureFire Optimized AR-15 Bolt Carrier Group - 5.56 NATO

SureFire Optimized AR-15 Bolt Carrier Group - 5.56 NATO

Bolt Carrier Group$450in 2 builds
Tango Down Short Quick Disconnect Vertical Grip - Black

Tango Down Short Quick Disconnect Vertical Grip - Black

Foregrip$90in 2 builds
Phase 5 Tactical AR-15 Pistol Pigtail Gas Tube

Phase 5 Tactical AR-15 Pistol Pigtail Gas Tube

Gas Tube$65in 2 builds
Franklin Armory 2012 BFS Marked Stripped Lower Receiver

Franklin Armory 2012 BFS Marked Stripped Lower Receiver

Lower Receiver$81in 2 builds

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

88.6%
AR-1588.6%
AR-108.3%
AR-93.1%

Caliber

64.5%
5.56 NATO64.5%
.223 Wylde14.7%
300 Blackout8.2%
.308 Win3.8%
9mm1.9%
Other6.8%

Gas System

44.5%
Mid-Length44.5%
Carbine28%
Rifle15.1%
Pistol10.9%
Blowback1.2%
Other0.4%

Builds Featuring This Part

See all 2 →

Builds in the community that include the DANIEL DEFENSE M4A1 RIS II Rail Interface System II (01-004-08001-006)

BuildPartsTotal
carbine 11.5" build
carbine 11.5"		10$4094.54
Franklin armory 11.5" 5.56 build
Franklin armory 11.5" 5.56		36$21843.42

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