The Daniel Defense RIS II M4A1 Handguard (brand part number 01-004-08001) is a free-float quad-rail handguard finished in Flat Dark Earth and sized to the longer M4A1 profile. As Daniel Defense’s original RIS II platform, it carries a full-length continuous quad rail on all four sides for maximum accessory mounting, wrapped around a rigid free-float barrel nut for a rock-solid zero. It is a genuine Daniel Defense part, built to the fit and finish the company is known for on duty rifles.

Key Specifications

• Length is 12.25 inches, matching the M4A1 profile.
• Rail configuration is a full-length quad rail on all four sides.
• Attachment is free-float, isolating the barrel from handguard pressure for a consistent zero.
• Finish is Flat Dark Earth.
• Comes from Daniel Defense’s original RIS II product line.

Frequently Asked Questions

What rail configuration does it use? It uses a full-length quad rail on all four sides.

Is this handguard free-floated? Yes, it uses a free-float design that isolates the barrel from handguard pressure.

Buy the Daniel Defense RIS II M4A1 Handguard

Get a duty-proven, full quad rail built for the M4A1 profile. Shop more Daniel Defense handguards in our AR15 parts selection, and this handguard ships fast from our Lubbock, Texas gun shop.