Home / AR Rifles / Daniel Defense / Daniel Defense M4A1 AR-15 Complete Upper Recevier 5.56x45mm NATO 14.5" Pinned Barrel
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Daniel Defense M4A1 5.56 NATO 14.5" Complete Upper FDE
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14.5 Cold Hammer Forged"
Daniel Defense M4A1 Rail Interface System
Daniel Defense Rail Panels Made from Santoprene
M4 12.0 Rail
Specifications
Caliber
Brand
Model
MPN
23-004-13150
UPC
815604016612
MSRP
$1,743
Barrel Length
14.5"
Overall Length
16"
Finish
Flat Dark Earth
Fits
AR-15
Description
The Daniel Defense M4A1 Upper Receiver Group features the M4A1 Rail Interface System (RIS II), which has been in use by US Special Operations Command (SOCOM) for the SOPMOD II Weapons System since 2005. This two-piece, free-floating rail system allows the mounting of devices like a M203 grenade launcher without influencing the barrels harmonics, eliminating problems like wandering point of impact that plagued other mounting designs. The two-piece design also allows for partial disassembly of the rail to aid in cleaning around barrel without completely removing the entire rail system. The weight of anything attached to the RISII rail system is fully supported by a sturdy bolt-up system, using 6 grade 8 bolts, leaving the barrel completely free floating for best possible accuracy and dependability. The M4A1 features a 14.5" Cold Hammer Forged M4 Profile barrel with a permanently attached Daniel Defense Improved Flash Suppressor to meet the NFA required 16" length. Daniel Defense compl...
