The Daniel Defense M4A1 in 5.56 NATO (MPN 0208806027055) features the RIS II Picatinny quad rail used by US Special Operations Command for the SOPMOD Block II program since 2005, paired with a 14.5-inch cold hammer forged M4-profile barrel and a 1:7-inch twist. Daniel Defense permanently attaches a Daniel Defense flash suppressor to the muzzle, and the independently ambidextrous GRIP-N-RIP charging handle serves left- and right-handed shooters. This California-legal configuration feeds from a fixed 10-round Daniel Defense magazine, ships optic-ready with sights sold separately, and includes a manual thumb safety and the ergonomic Daniel Defense buttstock and pistol grip. Among AR-platform rifles in the AR rifles category, this M4A1 favors California shooters who want an authentic SOPMOD-pattern rail system in a compliant configuration.

Key Specifications

• Chambered in 5.56 NATO/.223 Remington.
• Rifled at a 1:7-inch twist on a cold hammer forged M4-profile barrel.
• Features a 14.5-inch barrel with a permanently attached flash suppressor.
• Includes the RIS II Picatinny quad rail, an authentic SOPMOD Block II pattern.
• Includes an ambidextrous GRIP-N-RIP charging handle.
• Feeds from a fixed 10-round magazine for state compliance.
• Includes a manual thumb safety.
• Ships optic-ready, sights sold separately.
• Finished in flat dark earth (FDE).
• Weighs approximately 6.74 pounds.

Frequently Asked Questions

What rail system does this rifle use? The RIS II Picatinny quad rail, an authentic pattern used by US Special Operations Command since 2005.

Why is the magazine fixed at 10 rounds? This configuration complies with California magazine-capacity rules.

Buy the Daniel Defense M4A1, CA Legal

An authentic SOPMOD-pattern rail system in a compliant configuration is exactly what this M4A1 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.