KA Tech MAC Polarstar Electric Blue Euro AR7V HPA M4

$1,650.00
Barrel Length
Polarstar HPA Engine

Which Polarstar HPA Engine Should You Choose?

All FPS figures are measured with our standard 180mm 6.02 inner barrel and KA Tech's tuned hop-up, bucking, and regulator combination.

Kythera

250–400 FPS · 350 FPS @ ~100 PSI · Semi-auto only

Purely mechanical — no electronics, no full-auto. Just air, BBs, and go, with a realistic trigger pull, break, and reset. Great for training, Milsim, or fields that are hesitant about HPA rifles.

Jack

250–410 FPS · 350 FPS @ ~100 PSI · Up to 50 RPS full-auto

Our entry-level HPA engine. Fast semi-auto with real full-auto capability.

F2

250–440 FPS · 350 FPS @ ~100 PSI · Up to 85 RPS full-auto

The best overall HPA engine on the market — the strongest combination of air efficiency, accuracy, range, consistency, and tune-ability.

Fusion Engine

250–500 FPS · 350 FPS @ ~55 PSI · Up to 75 RPS full-auto

The powerhouse. A clicky tactical trigger board delivers crisp trigger response for players who want the most power out of their rifle.

Our recommendation: First time going HPA? Go with the Fusion Engine. If you're committing real money to get into HPA, go all the way the first time so you're not stuck upgrading piece by piece down the road.

Barrel Type

Standard Barrel vs. Speed Cannon

The standard outer barrel is a carbon fiber outer barrel with -14mm threads — the same setup you'll find on every airsoft rifle.

The Speed Cannon is a carbon fiber tube with integrated space for a tracer unit. You sacrifice 2in / 50mm of inner barrel length, but you get a recessed tracer unit and an aluminum cap that protects your carbon fiber. Speed Cannon fits Acetech Brighter C and R tracer units only.

Speed Cannon barrel detail Standard vs Speed Cannon barrel comparison Speed Cannon tracer unit recess

Up to 45 business days

Production starts the moment you order. Cancel any time before it begins for a full refund — no fee.

Backed by KA Tech Warranty
HPA Specialists Since 2022
Trade in anytime — up to 70% back in store credit
3-month labor warranty — you only pay for parts
Description

Every KA Tech rifle is built on internals and tuning we’ve spent the last four years perfecting. Our performance packages are the industry standard everyone else is chasing — if you want something that’s going to outperform everything else on the field, this is it.

Built to dominate on the field, the KA Tech MAC AR7 V is a premium custom HPA rifle engineered for players who want the highest level of accuracy, speed, durability, and customization. Designed with a full CNC aluminum and carbon fiber body, this platform delivers the perfect balance of lightweight handling, aggressive styling, and competition-ready performance.

This rifle is built with top-tier internals and premium external components to give players a true performance advantage. Whether you are snapping between targets in close quarters or demanding maximum consistency shot after shot, the MAC AR7 V is made to perform at a high level while maintaining the clean, signature look KA Tech is known for.

The AR7 V can be configured in two distinct setups to match your playstyle. Choose the standard outer barrel configuration with a 200mm inner barrel for a more traditional setup, or select the Speed Cannon configuration with a 155mm inner barrel, which houses the tracer unit inside the carbon fiber barrel for a cleaner and more streamlined look. Both options are built to deliver fast response, excellent air efficiency, and strong consistency on the field.

Every build is assembled around premium parts, proven HPA performance, and the flexibility serious players demand. From competitive speedsoft builds to highly customized personal setups, the KA Tech MAC AR7 V is built to give you an edge in performance, function, and style.

Choose the setup that best matches your build style:

Standard Barrel Configuration

  • Standard outer barrel
  • 200mm inner barrel

Speed Cannon Configuration

  • Speed Cannon front end
  • 155mm inner barrel
  • Tracer unit housed internally within the carbon fiber barrel

Buying a KA Tech rifle isn’t where our relationship ends — it’s where it starts. Think of us as the best HPA technicians in the country, in your pocket, 24/7. Want to change your FCU tune? Swap parts? God forbid something goes wrong? We want to be the first call you make for anything HPA-related. When you buy a KA Tech rifle, you’re not just getting the best build on the field — you’ve got a full tech team behind every move you make.

  • Full CNC aluminum and carbon fiber construction
  • Cerakoted for an extremely durable, field-ready finish
  • Built for extreme range, accuracy, and consistency
  • Premium HPA rifle platform with extensive customization potential
  • Lightweight but durable design for competitive play
  • Choice of standard outer barrel or Speed Cannon configuration
  • Speed Cannon option houses the tracer inside the carbon fiber barrel for a cleaner front-end look
  • Compatible with M4-style magazines
  • Built with top-tier internal and external components throughout
  • Tuned and tested with PTS EPM1 magazines and precision .25g BBs

Internal Parts

  • HPA Engine Options: Polarstar Kythera, Jack, F2, or Fusion Engine
  • FCU: Fully tuned Polarstar FCU
  • Hop-Up: M4G Hopup Unit
  • Nub: TDC Flathop
  • Bucking: Autobot 60/70
  • Inner Barrel: Crazy Jet 6.02, 128-254mm depending on barrel configuration
  • Regulator: KA Tech Edition Polarstar MR2 Regulator
  • Battery: Sold separately

Performance

  • Fusion Engine reference spec: 350 FPS @ ~55 PSI, 250-500+ FPS adjustable range, up to 75 RPS full-auto
  • Firing Modes: Semi / Full-Auto

External Parts

  • Receiver: AR7 V
  • Barrel Thread: -14mm
  • Magazine: M4-style (not included)
  • Handguard: 8" UL Carbon
  • Outer Barrel: 8" carbon, aluminum MAC end cap
  • Trigger: Hair-tuned Speed trigger
  • Magazine Catch / Selector: Spectra Arms
  • Production: Built to order — begins immediately upon purchase
  • Estimated Ship Time: Up to 45 business days (often less)
  • Need It Faster: Contact us to check current in-stock availability
  • Delayed Orders: If we can't meet this window, you may cancel for a full refund — no fee
  • Polarstar Manufacturer Warranty: 1 year on Polarstar components (engine, regulator, etc.)
  • KA Tech Labor Warranty: 3 months, 100% labor covered — you only pay for parts
  • Warranty Activation: Requires watching our 2-minute HPA do's & don'ts video
  • Cancellations: Accepted any time before shipping; 30% restocking fee applies once production has begun
  • Trade-Ins: 70% store credit / 50% cash refund if like-new, 60% store credit / 40% cash refund if used