Davidson Defense 'Challenge w/ Aero V2' 16.5-inch AR-15 5.56 NATO Nitride Rifle Complete Upper Build Kit

5.56x45 NATO / .223 Remington

Chambered for 5.56x45 NATO, originally derived from .223 Remington, 5.56 NATO is the standardized and most popular cartridge developed for the AR-15 platform. Utilizing a .22 Caliber projectile, the low mass, high-velocity cartridge allows superior weapons handling with manageable recoil and high accuracy. With a wide variety of ammunition choices on the market, 5.56 NATO chambered AR-15s are 'multi-caliber' and can reliably fire both 5.56x45 NATO and .223 Remington cartridges.

Mercury Precision 16.5" 5.56 NATO, Government Profile, Nitride, Rifle Gas

The Mercury Precision Satellite barrel is a high-quality and durable rifle barrel designed for precision shooting. With a 16.5-inch length and 1:7 twist rate, it offers optimized accuracy and stability. The government profile reduces vibrations and shot dispersion. Made from 4150 chrome moly vanadium steel with a nitride finish, it provides excellent wear resistance. The rifle-length gas system ensures smooth operation, even during rapid fire. It has a 1/2x28 thread pitch for compatibility with various muzzle devices. Whether you're a competitive shooter or a hunter, the Mercury Precision Satellite barrel is a top choice for superior rifle performance.

Recoil Technologies AR-15 1/2x28 TPI GI Birdcage Flash Hider 5.56 .223 A2

This A2 flash hider has a classic and effective design. Flash hiders are essential in position concealment and keeping your vision clear; especially in low light situations. This design has a flat bottom which means the gasses won't kick up dust because they are directed up and to the sides. It has a 1/2x28 thread pitch and a Manganese Phosphate finish to protect it from corrosion. This A2 flash hider is a classic because it simply does a great job.

Aero Precision Stripped AR-15 M16 Upper Receiver

This Aero AR-15 upper receiver features a standard 'Mil-Spec' design made from forged 7075-T6 Aircraft Grade Aluminum. This durable design comes with a standard rifle ejection door. The anodized finish only adds to its resilience against wear and tear. There is also a 1913 Picatinny rail and T-Marks to ensure users have enough room to add additional accessories. Made by Aero Precision, the Aero stripped upper is precision CNC machined and ready for your next build!

Trinity Force MLX 15" MLOK Freefloat Handguard, Partial Top Rail

The MLX M-LOK Handguard has a slim profile and improved ergonomics. It features an M-Lok rail attachment system and the top is a classic Picatinny rail which are both perfect for attaching your favorite accessories. The MLX Series uses the FREELOK Clamping System that utilizes free floating tabs to secure the rail to the receiver. Another advantage of this clamping system is that it provides frictional AND mechanical locking to create a secure fit between the rail and barrel nut. Lastly, this handguard is crafted from 6061-T6 aluminum with a hard coat anodized finish to keep it reliable.

Recoil Technologies 5.56x45mm Bolt Carrier Group

This 5.56 NATO Slabside Complete BCG has a simple, classic design. It is machined from 9310 steel which means this BCG is tough and durable. The nitride finish helps make it resistant to corrosion and increases its strength. It has been MPI and HPT tested to ensure its quality. All of these characteristics make this is a high-quality, durable BCG.

Recoil Technologies AR-15 M4 Charging Handle Mil-Spec Quality

This AR-15 M4 Charging Handle is machined from 7075 T6 aluminum and has a Type III hard coat anodized finish. This means that this is one strong, durable, and reliable charging handle. The Teflon coating on the handle makes it resistant to corrosion and waterproof. The complete assembly includes the latch. This charging handle is small but mighty.