Daniel Defense M4A1 FSP Rail Interface System II 12.25in 2-Piece Handguard Black DD-8030-BK
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Daniel Defense
Overview
The Daniel Defense M4A1 FSP Rail Interface System II is a 12.25-inch, free-float handguard designed to enhance accuracy by isolating the barrel from any pressure exerted during shooting. Constructed from durable 6061-T6 aluminum and finished with hardcoat anodizing, this handguard not only provides a robust platform for mounting accessories but also maintains a lightweight profile. This handguard is commonly found on builds that prioritize a balance of maneuverability and versatility, making it ideal for tactical and competitive shooting applications.
Specifications
Daniel Defense M4A1 FSP Rail Interface System II 12.25in 2-Piece Handguard Black DD-8030-BK
Available Merchants(6)
Prices checked
Price Alert
Build history on GunPartPicker
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today all 6 retailers we track have it in stock. Prices barely moved in October 2026, holding around $516, with no real sale all month. Buying today, the lowest price is $516 at Primary Arms, which matches the best price we saw in October.
Prices checked · refreshed daily across 37 retailers
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Builds Featuring This Part
See all builds →Builds in the community that include the Daniel Defense M4A1 FSP Rail Interface System II 12.25in 2-Piece Handguard Black DD-8030-BK
| Build | Parts | Total |
|---|---|---|
 | 15 | $3261.14 |
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