The M400 DH3 is the Daniel Defense collaboration variant of the M400, featuring Daniel Defense M-LOK handguard and DD-specification components throughout. A premium M400 with enhanced ergonomics and fit/finish from Daniel Defense partnership. Type: Semi-Auto Rifle Action: SA Caliber: 5.56 NATO Capacity: 30 Year introduced: 2021, USA Weight: 65.5 oz Overall length: 32.5" Status: Active Intended use: Tactical, Competition