The M4A1 RIII AR15 style firearm features an ambidextrous lower allowing both left- and right-handed shooters to operate the safety selector without having to move or remove their dominant hand from the rifle’s grip. Daniel Defense has taken the RIS II picatinny quad rail used on the M4A1 original and replaced it with a 12.5 inch RIS III rail featuring M-LOK attachment for lighter weight.
The M4A1 RIII is built around a 14.5 inch chrome-lined, heavy-phosphate-coated Government profile barrel featuring a suppressor-capable Dead Air three-prong flash hider.