KA Tech MAC Airtac Polarstars F2 AR8 HPA M4 Stuby Type 1 Skeletonized Cerakote Splatter - KA Tech Airsoft - Polarstar F2

KA Tech MAC Polarstar Stuby AR8-1 HPA M4

$1,350.00

Upper Receiver Black

Polarstar HPA Engine Kythera

Barrel Length & Type Standard Outer Barrel 6"

Up to 45 business days

30-Day Money Back Guarantee

Ships within 24-48 hours

HPA Specialists Since 2019

Description

This is a KA Tech Mac rifle, where style meets performance. Its a hand built and custom tuned HPA rifle made to dominate the CQB Field. Anything on the rifle can be customized beyond the preset options.

This rifle is equipped with top of the line internals giving you the ultimate advantage over the competition in terms of accuracy, speed, and customizability. With a full CNC aluminum and carbon fiber body its durable, lightweight, and stylish

*Our rifles are fully customized, individually manufactured, precision-tuned, coated, and assembled to order. Due to the level of craftsmanship and detail involved, production and assembly of your hand built rifle can take up to 45 working days if we don't have parts on hand.

Tech Specifications:

FPS: 270-380 adjustable

Inner Barrel Length: mm

Barrel Thread Spec: -14mm

Magazine: M4 Style Magazines *Not Included

HPA Engine: Polarstar F2

Firing Modes: Semi/Full-Auto

Battery: HPA 7.4v JST Mini Lipo *Not Included

Included Build Parts:

AR8 type 1 lower

AR8 type 1-5 upper or Airtac CRBN HPA/AEG Upper 155mm

Stuby Stock

Stippled Pistol Grip

Polarstar F2

Retro Arms hopup

Maple Leaf macron pink

Airtac 6.02 155mm inner barrel

Retro Arms speed trigger

Black Leaf speed trigger board (clicky trigger)

Retro Arms ambi magazine release

Retro Arms selector switch

Amped IGL

For this rifle, you can independently customize the color, pattern/design, material, or size of the following:

Upper Receiver [9 types of Skelitizations]
Lower Receiver [9 types of Skelitizations]
Barrel [Aluminum, Carbon] [5.0-14.5 inches]
Stock [Stubby, Carbon, Foldable] [5.0-9.0 inches]
Grip [Polymer]
Air Tank Grip [Monk, MAC, AGS (nylon) | all for Polarstar mr2 or Wolverine cat 5]
Gearbox [Full or HPA (based on supply or requirement of the rifle)]
Magazine Release [Maxx, Retro Arms, Angel Customs]
Selector Switch [Retro Arms, Angel Customs]
Trigger [Maxx, Retro Arms, Speed, Airtac]
Engine [PolarStar: Kythera, Jack, F2, Fusion Engine]
HopUp [RetroArms, Maxx, ZCI, Prowin]
Inner-Barrel [Airtac or ZCI based on inventory]
Bucking [Maple leaf based on rifle requirement]

*We recommend NOT making modifications to bucking and inner-barrel as these are specifically paired and selected for the engine and barrel length of your rifle.

Built to order — production begins immediately upon purchase.

Estimated production time: up to 45 business days (often less).

Need it faster? Contact us to check current in-stock availability.

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 are accepted any time before shipping; a 30% restocking fee applies once production has begun.

Trade-ins are accepted any time — 70% store credit / 50% cash refund if like-new, 60% store credit / 40% cash refund if used.