'Cobblestone Prairie' 10.5-inch AR-15 5.56 NATO Phosphate Pistol 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 weapon 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.

Gauntlet Arms AR-15 5.56 NATO 10.5" Inch 1-7 T Phosphate Cryo Treated Barrel

The Gauntlet Arms AR-15 10.5" 5.56 NATO barrel offers exceptional performance and durability. Made from 4150 Chrome Moly Vanadium steel with a Manganese Phosphate finish, this barrel is built to withstand tough conditions. With a 1:7 twist rate and carbine-length gas system, it provides accuracy and reliability for various shooting applications. The barrel's cryo-treated construction enhances its strength and longevity.

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.

Davidson Defense Mil-Spec AR-15 Upper w/ M4 Feedramps - 7075 T6 Aluminum

The Davidson Defense Stripped AR-15 Upper Receiver is easily the best bang-for-your-buck upper receiver out there. Forged from aircraft grade 7075 T6 aluminum to Mil-Spec tolerances, this upper receiver is lightweight and unyielding, providing an incredible base for your AR-15. Designed to be compatible with the AR-15 platform, this upper receiver works with AR-15 aftermarket parts, upgrades, and accessories.

Guntec 9" AR-15 AirLite Series "Honeycomb" M-LOK Free-Floating Handguard

This Upper Features A Premium 9" Air Lite M-Lok Honeycomb Handguard From Guntec. This Handguard Incorporates Hexagonal Lightening Cuts, Offering Substantial Weight Savings Without Sacrificing Structural Integrity. This Rail System Easily Installs Using The Provided Aluminum Barrel Nut. After Torquing Down The Barrel Nut, Simply Slide On The Rail And Secure Against The Receiver With 6 Included Screws.