Daniel Defense MK18 RIII URGI 10.3″ -5.56NATO

The MK18 AR15 style Upper Receiver Group is unmatched in size, weight, and performance, and features the new Daniel Defense RIS III rail.  The lightweight RIS III rail—modeled after the revolutionary RIS II two-piece handguard developed for SOCOM—features M-LOK attachment for lighter weight while still offering M203 grenade-launcher attachment.  The 10.3 inch Cold Hammer Forged barrel is the same length in use for the MK18 upper most commonly used for CQB operations.  Its independently ambi GRIP-N-RIP Charging Handle accommodates left- and right-handed shooters.   All Daniel Defense complete upper receiver groups come standard with an M16 profile bolt carrier group.