VFC MP7 HPA COMPLETE Receiver w/ PolarStar Engine

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$1,329.95

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Description

VFC MP7 HPA Complete Build — Includes PolarStar Engine

No donor gun. No conversion work. No starting from scratch.

The Bull Craft VFC MP7 HPA Complete Build gives you the entire MP7 system professionally assembled, tuned, tested, and ready to run.

We start with an Elite Force/VFC AEG MP7, install your selected PolarStar HPA engine inside our custom-engineered gearbox, complete the barrel, bucking, trigger, and air-system upgrades, and tune everything in-house before it ships.

This is the complete option for players who want proven Bull Craft MP7 performance without sourcing a compatible MP7, installing a conversion kit, or dialing in a new build from scratch.

🛠️ What’s Included

• Elite Force/VFC AEG MP7
The complete donor platform—not just a gearbox or receiver

• Pre-Installed PolarStar HPA Engine
Choose your preferred PolarStar engine configuration

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

• Trigger Options
Choose a flat/straight or curved trigger

• Upgraded Inner Barrel
6.03mm ID × 265mm length for improved accuracy and air efficiency

• CNC-Machined Aluminum Outer Barrel
Anodized finish
Available with 14mm CCW or original-spec 12mm CW threading

• Upgraded Bucking
Selected for consistent performance and a reliable air seal

• OEM Hop-Up Unit
Serviceable through the maintenance-friendly gearbox layout

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

• Printed Barrel Safety Cap
Included for shipping, transportation, and storage

• Bull Craft Baseline Spec Sheet
Provides a reliable starting point if your settings ever get out of hand

Every build arrives completely assembled, tuned, function-tested, and ready for final setup with your HPA equipment.

⚙️ Choose Your Configuration

HPA Engine

Select the PolarStar engine that best fits your performance goals and budget.

Trigger Style

Choose between our flat/straight and curved trigger options. Each trigger is installed and adjusted as part of the completed build.

Outer-Barrel Threading

Choose 14mm CCW for broader muzzle-device compatibility or 12mm CW to retain the original MP7 thread specification.

🔩 Why the Bull Craft MP7 System Works

Locked Engine Alignment

The PolarStar engine is positively secured inside the gearbox, preventing the shifting and alignment drift that can cause inconsistent feeding, air-seal problems, and poor accuracy.

One-Piece Air-System Design

The simplified air system provides excellent efficiency while reducing unnecessary connections and potential failure points.

Service-Friendly Maintenance

The latest gearbox design allows the hop-up, bucking, and barrel assembly to be serviced without completely opening the gearbox, disturbing the wiring, or voiding the warranty.

Tuned Before It Leaves

Every complete build is assembled and tested in-house. Your included spec sheet is based on our low-altitude, humid Florida environment and gives you a dependable baseline for making minor adjustments in your local climate.

🔄 Optional Upgrades

Amped IGL

An Amped IGL is not required for the build to function correctly, but it provides a more durable integrated air-line option.

Search “IGL” and add your preferred version to the same order. We’ll install it before your MP7 ships.

GSI Aluminum Hop-Up Arm

If you plan to use heavier BBs, consider adding the GSI Aluminum Hop-Up Arm for additional hop-up adjustment capability.

Search “VFC MP7 Aluminum Hop Up Arm” and add it to your order. We’ll install it during the build.

📖 Maintenance & Troubleshooting Support

Your MP7 arrives assembled and tested, but adjustments or routine maintenance may eventually be required.

Visit our VFC MP7 HPA Support & Troubleshooting page for selector-switch adjustment, double-firing solutions, hop-up maintenance, gearbox installation, and other video guides.