Scorpion Upper Receiver Kit 4.5"

The TTI Scorpion 4.5" Upper Receiver Kit is the mid-length option in the Scorpion lineup — a full CNC aluminum conversion for the AAP-01 that balances maneuverability with improved range. The TDC hop-up delivers precise, repeatable adjustment, and the included hardware completes the build without additional sourcing.

What’s Included

• CNC aluminum upper receiver (4.5")
• TDC hop-up unit
• Detachable bottom rail
• CNC muzzle brake
• CNC front & rear adjustable sights

Features

• Full CNC aluminum construction, black anodized finish
• TDC hop-up for precise, consistent adjustment
• 4.5" profile — compact without sacrificing performance

Compatibility

• Action Army AAP-01 / AAP-01C GBB