"BLUE BALLS" Custom M4 HPA Kit (Polarstar Jack) - Gel Blaster Guns, Pistols, Handguns, Rifles For Sale

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  • Regular price $1,859.00
  • $1859.00
Tax included. Shipping calculated at checkout.

 - Gel Blaster Guns, HPA Pistols, Handguns, Rifles For Sale

The Sting Ops Tactical custom range introduces "BLUE BALLS" Custom M4 HPA Kit 

A build from the ground up using all individual high end parts, this little cutie is lightweight, nimble but sure packs a punch shooting at 320 FPS and 40 RPS. 

Parts include:

- MK Tactical CNC anodized blue HPA gearbox

- Polarstar Jack Engine

- Skeletonized CNC V2 receiver

- Maxx CNC speed trigger

- Amped Airsoft standard weave braided IGL

- CAA Nylon comfort pistol grip

- MK Tactical CNC matching anodized blue drop stock adaptor

- M16 mini buttstock

- 4" keymod metal handguard

- KSC metal suppressor

- Atomic Energy 7.4v HPA battery


Professionally tuned and ready to plug n play so you can step on to the field and dominate your opponents.



  • 320 FPS (Depending on tune and PSI)
  • 40 RPS (Depending on tune)


Option Blaster only:

  • "Blue Balls" Custom M4


Option Full Kit:

  • "Blue Balls" Custom M4
  • Gladiatair U68 Ultra-light Carbon tank
  • Gladiatair 4500psi Warriair regulator
  • Polarstar Micro Gen 2 regulator or Wolverine Storm on tank regulator (depending on availability)
  • Amped Airsoft Standard weave matching braided main line

 Note: 7-10 Day build time required before shipping 


    Best  - Gel Blaster Guns, HPA, Pistols, Handguns, Rifles For Sale Australia