Spikes Tactical SPIKE’S M4 Flat Top Forged Upper – Multi-Caliber

Description

This forged flat-top M4 upper receiver from Spikes Tactical is a mil-spec forged 7075-T6 aluminum receiver finished in Type III hardcoat black anodize. It ships as a stripped upper with the forward assist and ejection port door installed and is intended for use on AR/M4 platform builds where a durable, mil-spec upper is required.

Key Specifications

• The caliber designation is Multi-Caliber.
• The receiver is machined from a 7075-T6 aluminum M4 forging.
• The finish is a Type III hardcoat black anodize.
• The product ships stripped (no charging handle, barrel, BCG, or gas components included).
• Installed accessories include the forward assist and ejection port door.
• Sights are none; optic ready.
• The color is black.
• The receiver is configured as a flat top for optics and rail mounting.
• Fitment is for AR rifles (M4 platform).
• The stripped upper weighs approximately 8.5 oz.

This forged 7075-T6 flat-top stripped upper provides a solid, mil-spec foundation for custom AR builds. Its hardcoat anodized finish and installed forward assist/ejection door simplify assembly while leaving the core choices—barrel, gas system, handguard, charging handle, and bolt carrier group—up to the builder. It is well suited for competition builds, precision-oriented projects, and general purpose range platforms where durability and compatibility with M4-spec components are priorities.