The RIS II provides ample room for adding tactical accessories, while also creating a full length, uninterrupted top rail surface with the A4 Flat-Top receiver that can accommodate a shooter's chosen optic and/or iron sight arrangement. This upper comes equipped with a 9.5" Black RIS II Mk18 Quad-Rail Handguard that covers a pinned, low profile gas block at the carbine gas port position and Free Floats the barrel for increased accuracy potential. M4 feed ramps are incorporated into the barrel extension and upper to enhance reliable feeding, while a true 5.56x45 NATO chamber ensures that both commercial and higher pressure surplus mil-spec ammunition may be safely used.
The Daniel Defense MK18 Complete AR-15 Pistol Upper Assembly is a faithful recreation of the US Navy's Mk18 Mod 1 platform, and features a Premium 10.3" Cold Hammer Forged Barrel made from Mil-Spec 4150 Chrome-Moly Vanadium Steel that is Chrome Lined for durability and corrosion resistance. DANIEL DEFENSE MK18 AR15 10.3" SBR UPPER BLACK RIS II RAILīRAND NEW IN THE BOX AND READY TO SHIP! BUY IT NOW!!īarrel: 10.3" Cold Hammer Forged, Chrome-Moly Vanadium Steel, Mil-Spec Heavy Phosphate Coated, Government Profile
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