Spikes Tactical M4 flat top upper receiver is machined from a Mil-Spec 7075 T6 forging with a durable Type III Hardcoat Anodized finish that also features laser engraved T-Markings, M4 feed ramps cut into the receiver before Anodizing to avoid future reliability issues, and finished with our spider logo. We've also included a forward assist and ejection port door cover already installed in the upper for you!
Spike's Forged M4 Flat Top Upper Receiver (Stripped)
Pre-installed forward assist and ejection port door cover
Spike's Tactical Lifetime Warranty