Outerwild AR15 Complete Premium Upper Receiver Billet 5.56NATO 16in 1-7 Twist 15in M-LOK Handguard Black Anodize

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Outerwild

Overview

The Outerwild AR15 Complete Premium Upper Receiver is a fully assembled unit designed for the AR-15 platform, featuring a 16-inch barrel chambered in 5.56 NATO. The 1:7 twist rate enhances the stability of heavier bullets, making it suitable for a variety of ammunition types. This upper receiver, crafted from billet aluminum and finished in black anodize, provides a robust and aesthetically pleasing option for builders looking to enhance their firearm's performance and appearance. It is commonly found in builds focused on versatility and precision shooting.

Specifications

MPN40273410001O

ColorBlack

Caliber5.56 NATO

Receiver TypeBillet

AssemblyComplete

Barrel Length16

PlatformAR-15

Twist Rate1:7

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Outerwild AR15 Complete Premium Upper Receiver Billet 5.56NATO 16in 1-7 Twist 15in M-LOK Handguard Black Anodize

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Build history on GunPartPicker

Builders on GunPartPicker first added the Outerwild AR15 Complete Premium Upper Receiver Billet 5.56NATO 16in 1-7 Twist 15in M-LOK Handguard Black Anodize to a build in April 2026.

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Updated Oct 22, 2026 · from real builds on GunPartPicker