Fully Built DDMK18 Polarstar F2 HPA M4
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♻️ KA Tech Refurbished PolarStar HPA Rifle – Pro Performance, Refreshed
This rifle is part of the KA Tech Refurbished Program, where pre-owned parts are rebuilt, inspected, and tuned into a fully optimized PolarStar HPA platform. While the components may be used, the performance is absolutely unmatched—consistent, responsive, and dialed-in the same way as our premium custom builds.
Every rifle goes through the same performance process:
✔ full teardown & inspection
✔ air-seal optimization
✔ nozzle alignment
✔ chrono logging & deviation testing
✔ speed trigger tuning
✔ feeding & cycling verification
If you want elite shot quality at the best possible value, this is it.
⚙️ Performance Overview
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Engine: PolarStar F2 —cleaned, inspected, and tested
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Consistency: Low FPS deviation through KA Tech air-seal tuning
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Trigger: Precision-tuned for crisp semi-auto response
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Accuracy: Refurbished hop-up setup and inner barrel for repeatable shots
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Power: PSI-adjustable for indoor/outdoor fields
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Reliability: All parts inspected for durability and function
Even with pre-owned components, these rifles shoot better than most brand-new builds thanks to KA Tech tuning.
🧩 Parts List
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Engine: Polarstar F2
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Hopup Chamber: LT Red Hopup
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Bucking: maple leaf close bolt yellow
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Inner Barrel: 6.02 inner barrel
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Trigger: red SPEED trigger
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Additional Upgrades: Red rear body pin, weaved amped IGL
Parts may show cosmetic wear but have been tested and confirmed 100% functional.
Attachments included and magazine not included unless stated otherwise.
Optional Add-Ons:
Tracer units, batteries, fcu, optics, airline, regulator, and air tank packages available.
♠️ KA Tech Refurbished Guarantee
Refurbished build, premium performance.
Every rifle—new or used—is tuned with the same KA Tech standard:
zero compromises, no shortcuts, and performance you can feel.