Bank Saver Arcturus Polarstar HPA M4

2 reviews

$449.99
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.

Attachments

Made to order, ships in up to 45 business days

Trade in your rifle any time

Shipping & returns

Backed by KA Tech Warranty
HPA Specialists Since 2022

Looking to get into HPA without breaking the bank? Look no further, introducing the “Bank Saver” the first professionally built and tuned HPA rifle to drop below $450 in the Airsoft market. We want to provide a reliable, well rounded, and budget friendly rifle to the community without sacrificing quality. It can be optioned with any of the 4 Brand New Polarstar HPA engines as well as with shown attachments. Any hopup, bucking, inner barrel, trigger, airlines, or accents colors can be customized - please email klaus@ka-tech.us for pricing on custom builds. 

Parts List:

Base rifle - ARCTURUS LWT MK-I CQB 10" AEG SPORT BLACK 

Engine - Your choice of Polarstar HPA Engine 

Hopup- Arcturus RS Hopup Unit

Bucking - Maple Leaf (dependent on engine choice)

Inner barrel - 280mm inner barrel 

Rifle construction - Full Reinforced Nylon Fiber with molded metal inserts 

Handguard - 10in

Outer barrel - 10.8in

Weight - 4.5-5lbs

 
What do you need for the rifle to function?

for the Kythera option you only need an airrig, magazines, and BBs as it is a mechanical system, no electronics.

for the Jack, F2, and Fusion engine you’ll need an fcu, battery, airrig, magazines, and BBs

 

(Polarstar Engine Prices are controlled by MAP)

Made to order. We build your airsoft rifle once you order it, so plan for up to 45 business days (most take less). Free shipping over $150.

Need it sooner? Contact us before ordering and we’ll tell you what’s in stock.

Trade in your rifle any time. See our Refund Policy. More in our Shipping Policy.

Every KA Tech airsoft rifle is backed by two layers of coverage:

  • Polarstar Manufacturer Warranty, 1 year, on your Polarstar components.
  • KA Tech Labor Warranty, 3 months. We cover 100% of the labor, you only pay for the replacement part.

Trade in your rifle at any time, for store credit or a cash refund. Like New: 70% store credit or 50% cash. Used at all: 60% store credit or 40% cash. Cancelling before it ships carries a 30% restocking fee.

Full terms on the warranty page, our Refund Policy and our Shipping Policy.

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