Daniel Defense M4A1 RIS II 12.25" 6061 T6 Aluminum Forend Rail Interface System, Black - 408001006
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Daniel Defense
Overview
The Daniel Defense M4A1 RIS II is a 12.25-inch handguard designed for the AR-15 platform, crafted from durable 6061-T6 aluminum. This handguard features a Picatinny mounting interface, allowing builders to securely attach various accessories, enhancing functionality and customization. It is commonly found in gas system builds that utilize the carbine length and chamber the 5.56 NATO caliber, making it a solid choice for versatile configurations.
Specifications
Daniel Defense M4A1 RIS II 12.25" 6061 T6 Aluminum Forend Rail Interface System, Black - 408001006
Build history on GunPartPicker
Builders have added the Daniel Defense M4A1 RIS II 12.25" 6061 T6 Aluminum Forend Rail Interface System, Black - 408001006 to their builds on GunPartPicker. Since April 2026, it ranks #126 of the 885 handguards builders have added. Builds with this handguard are mostly chambered in 5.56 NATO (71%, then .223 Wylde 21%), split between carbine-length (40%) and mid-length (40%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today both retailers we track have it in stock. Prices barely moved in October 2026, holding around $542, with no real sale all month. Buying today, the lowest price is $516.99 at Palmetto State Armory, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
Daniel Defense 14.5" 5.56 NATO CHF Mid-Length 1:7 Government Contour AR-15 Barrel With Gas Block
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
WMD Guns 5.56 AR-15 Bolt Carrier Group Without Hammer - NIB-X Finish - Black
B5 Systems Type 23 P-Grip - Coyote Brown
Geissele Automatics .154" SSA Trigger
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the Daniel Defense M4A1 RIS II 12.25" 6061 T6 Aluminum Forend Rail Interface System, Black - 408001006
| Build | Parts | Total |
|---|---|---|
 | 9 | $2541.90 |
 | 16 | $1882.50 |
 | 11 | $1630.91 |
 | 16 | $1249.04 |
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