Davidson Defense Left-Handed Ronin Competition 16.5-inch Mid-Length-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Rifle Complete Upper Build

Left-Handed Ronin Competition 16.5-Inch Mid-Length-Gas 1-7 5.56 NATO AR-15 Freefloat M-LOK Handguard Rifle Complete Upper

This is a complete left-handed AR-15 upper chambered in 5.56 NATO, built around a 16.5-inch satellite medium profile barrel with a QPQ nitride finish, a 1-7 twist rate, and a mid-length gas system. The left-handed Black Diamond Series slick side billet aluminum upper receiver anchors the front end with a left-hand ejection port and a clean slick side exterior profile that omits the forward assist from the receiver body. The mid-length stainless steel gas tube and micro low-profile steel gas block at .750 complete the gas system, and the 15-inch freefloat M-LOK handguard in black with a partial 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, 16.5-inch satellite medium profile barrel, QPQ nitride finish
• 1-7 twist rate, 1-2x28 thread pitch
• Mid-length gas system with mid-length stainless steel gas tube
• Micro low-profile steel gas block, .750
• Left-handed Black Diamond Series slick side billet aluminum upper receiver
• 15-inch freefloat M-LOK handguard, black, partial 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 steel crush washer

Perfect For

• Left-handed AR-15 rifle builders pairing a complete 5.56 NATO upper with an existing lower configured for left-hand operation
• Shooters adding a left-handed 16.5-inch mid-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 a purpose-built left-hand ejection slick side billet upper in one complete upper assembly

Upper Receiver and Barrel

The left-handed Black Diamond Series slick side billet aluminum upper receiver anchors the front end with a left-hand ejection port and a clean slick side exterior profile that omits the forward assist from the receiver body. The 16.5-inch satellite medium profile barrel brings a QPQ nitride finish and a 1-7 twist rate to the 5.56 NATO chamber, threaded at 1-2x28. The mid-length stainless steel gas tube and micro low-profile steel gas block at .750 run a mid-length gas system along the 16.5-inch barrel, a well-matched gas system length for this barrel profile and chambering. The 15-inch freefloat M-LOK handguard in black surrounds the barrel and gas system along the forend with a partial Picatinny top rail running along the top of the handguard and M-LOK slots along the remaining handguard body for accessory attachment across the full 15-inch length.

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 nitride finish on the BCG covers the carrier and bolt in a durable surface treatment consistent with the QPQ nitride finish on the barrel. 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 steel 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.