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Daniel Defense M4A1 FSP 12.25" Rail Interface System RIS II - Black

Availability: Out of Stock - backorder and will be shipped once in stock.
SKU: DD01-004-08030-006
Manufacturer part number: 01-004-08030-006
GTIN: 815604010313

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Product description

The Daniel Defense M4A1 FSP 12.25" Rail Interface System RIS II in Black (01-004-08030-006) was designed for a free float M203 solution without additional parts. This was accomplished by integrating all of the needed parts to free float the M203 into the rail itself.


  • Aircraft Grade 6061-T6 Aluminum
  • Free-Floating Barrel Design For Increased Accuracy
  • Two-Piece Design for USSOCOM Allows For the Attachment of an M203 Grenade Launcher When Lower Rail Section is Removed.
  • Battle-Proven, 6-Bolt Bolt-Up System Securely Attaches Handguard to the Upper Receiver
  • Grade 8 Military Specification Fasteners
  • Uninterrupted Upper Rail Platform & Mil-Spec 1913 Picatinny Rails
  • Mil-Spec Type III Hard Coat Anodized Finish


Product Weight: 17.1 oz
Rail Length: 12.25"
Width: 2.23"
Height: 2.25"
Inside Diameter 1.15"
Barrel Nut: Steel
Gas System: Carbine
Free Float: Yes
Continuous Upper Rail: Yes
Integrated Sling Swivel: No
Additional information
Manufacturer: Daniel Defense