Use what “THEY” use. The Daniel Defense MK18 features the railed forend
Daniel Defense currently provides to USSOCOM and a 10.3” Cold Hammer
Forged Barrel. The Flat Dark Earth MK18 rail system features the
Bolt-Up System and has been rigorously tested prior to fielding by
USSOCOM (currently over 15,000 units). The 10.3” barrel is the same
length in use for the MK18 upper most commonly used for CQB operations.
The MK18 Factory SBR by Daniel Defense is unmatched in size, weight,
and performance. This rifle also comes with the newly designed, rugged and comfortable Daniel Defense Buttstock and Pistol Grip.