Davidson Defense Left-Handed Warden Duty 14.5-inch Carbine-Gas 1:7 5.56 NATO AR-15 Freefloat Keymod Handguard Pistol Complete Upper Build

Left-Handed Warden Duty 14.5-Inch Carbine-Gas 1-7 5.56 NATO AR-15 Freefloat KeyMod Handguard Pistol Complete Upper

This is a complete left-handed AR-15 upper chambered in 5.56 NATO, built around a 14.5-inch M4 profile 4150 CrMoV steel barrel with a Parkerized finish, a 1-7 twist rate, and a carbine-length gas system. The Black Diamond Series left-handed slick side billet aluminum upper receiver with a black anodized finish anchors the front end with a left-hand ejection port and a clean slick side exterior that omits the forward assist and dust cover from the receiver body. The carbine-length stainless steel gas tube and micro low-profile steel gas block at .750 O.D. complete the gas system, and the Trinity Force ECHO 12-inch freefloat KeyMod handguard with a full-length Picatinny top rail covers the forend. An A2 GI Birdcage flash hider at 1-2x28 closes out the muzzle end. A Davidson Defense premium left-handed M16 nitride bolt carrier group and a Mil-Spec M4 charging handle complete the upper component set.

Key Features

• 5.56 NATO chambering, 14.5-inch M4 profile 4150 CrMoV steel barrel, Parkerized finish
• 1-7 twist rate, 1-2x28 thread pitch
• Carbine-length gas system with carbine-length stainless steel gas tube
• Micro low-profile steel gas block, .750 O.D.
• Black Diamond Series left-handed slick side billet aluminum upper receiver, black anodized, no forward assist, no dust cover
• Trinity Force ECHO 12-inch freefloat KeyMod handguard, full-length Picatinny top rail
• Davidson Defense premium left-handed M16 nitride bolt carrier group
• Mil-Spec AR-15 M4 charging handle
• A2 GI Birdcage flash hider, 1-2x28 thread pitch
• Black 1-2-inch crush washer

Perfect For

• Left-handed AR-15 pistol builders pairing a complete 5.56 NATO upper with an existing lower configured for left-hand operation
• Shooters adding a left-handed 14.5-inch carbine-gas upper to an AR-15 lower they already own
• Left-handed builders who want a Davidson Defense left-handed M16 nitride BCG and charging handle included with an M4 profile 4150 CrMoV barrel and Trinity Force ECHO KeyMod handguard in one complete upper assembly

Upper Receiver and Barrel

The Black Diamond Series left-handed slick side billet aluminum upper receiver with a black anodized finish anchors the front end with a left-hand ejection port and a clean slick side exterior profile that omits both the forward assist and dust cover from the receiver body. The 14.5-inch M4 profile 4150 CrMoV steel barrel brings a Parkerized finish and a 1-7 twist rate to the 5.56 NATO chamber, threaded at 1-2x28. The carbine-length stainless steel gas tube and micro low-profile steel gas block at .750 O.D. run a carbine-length gas system along the 14.5-inch barrel. The Trinity Force ECHO 12-inch freefloat KeyMod handguard surrounds the barrel and gas system along the forend with a full-length Picatinny top rail running the entire length of the handguard for optics and accessory mounting, and KeyMod slots along the remaining handguard surfaces for additional accessory attachment.

Bolt Carrier Group and Charging Handle

The Davidson Defense premium left-handed M16 nitride bolt carrier group is a purpose-built left-hand BCG designed to function with the left-handed upper receiver and eject cases from the left side of the build. The Mil-Spec M4 charging handle pairs with the BCG inside the upper receiver to complete the upper interior. These two components complete the upper component set alongside the upper assembly, barrel, and handguard.

Muzzle Device

The A2 GI Birdcage flash hider threads onto the 1-2x28 muzzle end of the barrel. The included black 1-2-inch crush washer seats at the barrel shoulder and completes the muzzle hardware for this upper.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.