Davidson Defense Aegis Lightweight w/ DTT Plan B Radial Brake 16-inch Pistol-Gas 1:8 .300 BLK AR-15 Freefloat M-Lok Handguard Rifle Upper Build Kit

Davidson Defense Aegis Lightweight AR-15 Upper Build Kit - 16-inch, .300 Blackout, Pistol Gas, M-Lok Freefloat Handguard, DTT Plan B Radial Brake

The Davidson Defense Aegis Lightweight is a .300 Blackout AR-15 upper build kit built around a 7075-T6 aluminum upper receiver with an anodized finish and M4 feed ramps. The kit includes a 16-inch H-Bar profile barrel in 4150 chrome moly vanadium steel with a phosphate finish, a 1:8 twist rate, and a 5/8x24 thread pitch, a 15-inch freefloat M-Lok handguard in Type III hard coat anodized black 6061-T6 aluminum, a micro low-profile 0.75 steel pistol gas block, and a Delta Team Tactical Plan B Muzzle Radial Hole Brake in 17-4 stainless steel with a black nitride finish at 5/8x24. BCG and charging handle are not included.

Key Features

• 7075-T6 aluminum upper receiver, anodized finish, M4 feed ramps
• 16-inch H-Bar profile barrel, 4150 chrome moly vanadium, phosphate finish
• .300 Blackout
• 1:8 twist rate
• 5/8x24 thread pitch
• Pistol gas system
• Micro low-profile 0.75 steel gas block
• 15-inch freefloat M-Lok handguard, 6061-T6 aluminum, Type III hard coat anodized black
• Delta Team Tactical Plan B Muzzle Radial Hole Brake, 17-4 stainless steel, black nitride finish, 5/8x24
• BCG not included
• Charging handle not included

Perfect For

• AR-15 builders sourcing a .300 Blackout upper build kit with the DTT Plan B muzzle device without BCG and charging handle
• Shooters pairing this upper kit with an existing AR-15 lower assembly and their own BCG and charging handle
• Builders looking for a lightweight freefloat M-Lok upper build kit in .300 Blackout with a stainless steel radial brake

Barrel and Gas System

The barrel is a 16-inch H-Bar profile unit in 4150 chrome moly vanadium steel with a phosphate finish, chambered in .300 Blackout with a 1:8 twist rate and a 5/8x24 thread pitch. The pistol-length gas system pairs with a micro low-profile 0.75 steel gas block to cover the gas regulation side of the upper.

Plan B Muzzle Device

The DTT Plan B is a radial ported hole brake in 17-4 stainless steel with a black nitride finish, threaded at 5/8x24. It supports modular suppressor mounting ecosystems and serves as the attachment interface for Plan B compatible suppressor systems.

Upper Receiver and Handguard

The upper receiver is 7075-T6 aluminum with an anodized finish and M4 feed ramps, forming the structural core of the upper assembly. The 15-inch freefloat M-Lok handguard is 6061-T6 aluminum in Type III hard coat anodized black, surrounding the barrel without contact and providing M-Lok mounting positions for compatible accessories.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included.