New
New
Backed by KA Tech Warranty
Airtac Monk ESG Polarstar Fusion Engine HPA M4
$1,200.00$1,600.0025% off
Upper
Gold Airtac Upper
HPA Specialists Since 2022
Description
Airtac Monk ESG Polarstar Fusion Engine HPA M4
Made for extreme speedsoft performance — the Monk ESG pairs a Polarstar Fusion Engine with a fully tuned Airtac platform for a rifle that hits hard and responds instantly. KA Tech tuned to 350 FPS @ 90 PSI.
Highlights
- Monk ESG grip housing a Polarstar MR2 regulator for consistent, tunable air delivery
- Genuine G&G lower for a true, mil-spec-feel trigger group fit
- Powered by a Polarstar Fusion Engine — the most powerful HPA engine we run
- Silver curved speed trigger for a fast, tactile pull
- Clean 3D-printed end cap finish
- Maxx M4E hop-up unit with a flat hop and Maple Leaf bucking for locked-in accuracy
- 6.02 precision inner barrel
- Available in Gold or Red Airtac Upper
Why This Build
Built for speedsoft, where every millisecond of trigger response matters. The Fusion Engine platform gives the Monk ESG elite-level speed and reliable HPA performance, tuned and inspected by KA Tech before it ships.
Included
- Complete Airtac Monk ESG Polarstar Fusion Engine HPA M4
- Field-ready assembly and inspection
- KA Tech support for setup questions
Parts and accessories ship within 7 business days. Custom HPA rifle builds take up to 45 business days (often less). Need it sooner? Contact us to check current stock.
All sales on parts and accessories are final once shipped. Defective or damaged items are covered under the KA Tech Warranty.







