Daniel Defense Mk18 RIS rail, BLK, BLEM high grade

ships from our shop in 3 days +/-

Daniel Defense Mk18 RIS-II Rail, BLK, with hardware

Minor Blemish, Grade A-

Black Mk18 RIS-II rail

Every now and then, one of our guys messes up the bottom rail, and tries to unscrew the bottom RIS rail, and makes a mark.  We sell as blemished units.  These are not used, but you will find small screw rub marks on the bottom rail, closest to the receiver.

Daniel Defense is the Sole Source Provider of the RIS II to the United States Special Operations Command (SOCOM)  The Daniel Defense MK18 RIS II is designed to work specifically on the MK18 CQBR.  

The Daniel Defense RIS II is to be used in conjunction with the MK12 Low Profile Gas Block. The Daniel Defense RIS II free-floating Picatinny rail systems are designed to allow individual operator to quickly, and without special tools, mount M203 Grenade Launcher and precisely mount SOPMOD accessories to host weapon without effecting point of impact. The Daniel Defense RIS II is an innovative upgrade to the M4 platform and is available for commercial purchase directly from Daniel Defense or any authorized distributor.

Note:  Charlie's is bringing you a new Daniel Defense rail, not used.  Charlie's is a Daniel Defense dealer, and we buy new rails, new old stock, and also take-off rails during our builds.  This is a blemished unit.


  • Free Floating Barrel Design
  • Uninterrupted Upper Rail Platform
  • Aircraft Grade Aluminum
  • Hardened Steel Barrel Nut
  • Grade 8 Military Specification Fasteners
  • Mil-Spec 1913 Picatinny Rails
Precision CNC machined from Aircraft Grade Aluminum and Military Specification Type II Hard Coat Anodized in SOCOM approved Black.


Daniel Defense Bolt Up System Barrel Nut Wrench is required for installation, which is sold separately here.

Included in your purchase:

  • Black RIS Rail, upper and lower section
  • hardware kit to install, including DD barrel nut
  • Black Ergo "ladder" rail covers (3)
  • NO TOOLS INCLUDED (see above)