GC_UPC Daniel Defense Upper Receiver with Flash Hider Assembly MK18 RIII URG, 5.56x45mm NATO, 19.3 inch, 10.3 inch Barrel, Government Profile, Carbine Length, 1-7 Twist, 1/2x28 Thread, M-LOK Handguard, Flash Suppressor, Salt Bath Nitride, FDE, 23-004-81721-011 $1,313.16 2300481721011 show more like this Free Shipping on most orders over $49 Optics Planet