Please visit our store at for your AR15 needs.

We have a very limited supply of these sets. You will receive one Spikes Upper Receiver complete with Ejection Door / Forward Assist AND one complete Spikes BCG. Both have the Spikes Spider Logo on them.

Click on the link below to purchase.

Spikes AR15 Complete Bolt Carrier Group - 5.56MM ST5BG01. This will also work with 300 Blackout.
Spike's Tactical Complete Bolt Carrier Group. Complete with Bolt Carrier, Bolt and Firing Pin. , Chrome Lined, Military Spec. Heavy Phosphate Coated, and feature a properly staked gas key. BCGs are machines from Carpenter 158 Steel. Gas Keys are also hardened. HPT/MPI Bolt. These are the heavier M16 Bolt Carrier group and will work with any semi auto or full auto AR15 or M16.

Spikes Forged M4 Upper Receiver Assembly SFT50M4
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!

Thank You,
MAS Defense LLC