AR57 Ultra Light Tactical Upper Assembly 5.7x28

AR57 Ultra Light Tactical Upper Assembly

This purpose-built upper assembly delivers modern performance in the increasingly popular 5.7x28mm cartridge. Whether you're building a new rifle or upgrading an existing platform, this upper provides the foundation for a capable, efficient shooting system.

Key Features

• Caliber: 5.7x28mm
• Barrel: 16-inch with 1:9 twist rate
• Receiver: Forged 7075 T6 monobloc aluminum for strength and light weight
• Bolt Carrier: 8620 steel alloy construction
• Finish: Black Melonite treatment for corrosion resistance and durability
• Flash Hider: Integrated 8620 steel alloy design with Melonite finish

Design Philosophy

The 5.7x28mm cartridge offers shooters a unique combination of low recoil, minimal muzzle rise, and effective terminal performance. This upper assembly is engineered to maximize those advantages while maintaining the modularity and reliability that modern shooters expect.

The monobloc aluminum construction keeps weight down without compromising structural integrity. The 1:9 twist rate stabilizes a wide range of 5.7x28mm projectiles, giving you flexibility in ammunition selection.

Finish and Durability

The Black Melonite treatment protects all steel components against corrosion and wear. This proven finish has earned respect among serious shooters for its durability and low-maintenance characteristics.

This upper assembly is compatible with standard AR-15 lower receivers, making it an excellent choice for builders seeking to expand their platform's capabilities.