VFC MP7 HPA Drop-In Kit, Incls: PolarStar Engine | BULL CRAFT

VFC MP7 HPA Drop-In Kit — Includes PolarStar Engine

The MP7, perfected. Built to run. Trusted worldwide.

The Bull Craft VFC MP7 HPA Drop-In Kit is the complete solution MP7 users have been waiting for. Featuring a pre-installed PolarStar HPA engine housed in our custom-engineered gearbox, this system eliminates alignment issues from the start and delivers outstanding air efficiency, consistency, and reliability.

Every kit is designed, printed, processed, assembled, and tuned in-house. With upgraded internals and a service-friendly design, this drop-in kit delivers serious performance with minimal installation effort.

?️ What’s Included

• Pre-installed PolarStar HPA Engine
  Choose your preferred PolarStar model for seamless integration

• Custom MP7 Gearbox
  Designed, printed, processed, and assembled in-house for perfect engine alignment

• Trigger Options
  Flat / Straight / Curved — tuned for clean, responsive pull

• Upgraded Inner Barrel
  6.03mm ID × 250mm length for improved accuracy and efficiency

• CNC-Machined Aluminum Outer Barrel
  Anodized finish
  14mm CCW threaded (or 12mm CW original-spec option)

• Upgraded Bucking
  Proven consistency and reliable seal

• OEM Hop-Up Unit
  Compatible with current OEM components
  Future-ready for Bull Craft and aftermarket designs

• Quick-Disconnect HPA Fitting
  Male macro line, non-filtered

• One-Piece Air System Design
  Excellent air efficiency and simplified installation

• Maintenance-Friendly Layout
  Hop-up and bucking serviceable without full gearbox teardown

? Installation & Performance Notes

• Minimal body modification required
• Engine is positively locked — no shift, no alignment drift
• Trigger install requires patience (step-by-step video guides provided)
• Excellent air efficiency and shot-to-shot consistency
• Trusted worldwide by MP7 HPA users

Each kit ships with a printed barrel safety cap and a spec sheet tuned for low-altitude, humid environments, providing a reliable baseline for dialing in performance.

? Optional Upgrades (Sold Separately)

• Amped IGL Line — enhanced durability
  (Search “IGL”)

• GSI Aluminum Hop-Up Arm — recommended for heavier BBs
  (Search “VFC MP7 Aluminum Hop Up Arm”)

No guesswork. No compromises.
This is the MP7 HPA solution operators have been demanding—built to run hard, stay efficient, and perform flawlessly.