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AirTac Customs Gen 4 HPA CRBN Upper Receiver
(Color: Silver / 128mm)

ID: 117470 (ACC-ATC-HPA-CRBN-128-SV)

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$149.99

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Features

Genuine CNC milled carbon fiber and ABS polymer construction
40% Stronger nylon frame
CNC machined 6061 aluminum front sight
CNC machined 6061 aluminum front 14mm negative thread
Fiber optic front and rear sights for fast target acquisition
Dual hop-up windows for on-the-fly adjustments
Perfected drop-in fitment on a G&G lower with a Maxx hopup
Included fiber optics rods (Green and Red)
Lifetime warranty for breakage / defects through the manufacturer)

HPA CRBN Uppers are a sleek way to turn any build into a lightweight beast, made with genuine carbon fiber for strength and durability. Our fourth generation proudly sports new CNC aluminum skeletonized front threads and sights as well a durable and 40% stronger Katana HPA frame.

The HPA CRBN Uppers feature dual hop-up windows, fiber-optic front and rear sights, perfect fitment and CNC aluminum parts. All for the same price!

All uppers are cross-compatible, so you can swap your tubes and parts between any of your CRBN uppers!

Manufacturer: AirTac Customs

Weight: 110g
Inner Barrel Length (Not Included): 128mm
Threading: 14mm CCW (Counter-Clockwise)
Compatibility:

Polarstar Fusion Engine (Drop-In)
F2, Jack, Inferno, N7, Pulsar etc. (Requires CRBN Gearbox)
G&G polymer (SSG1, ARP9). Metal (ARP556) and Lancer Tactical lowers (drop-in fitment)
Metal Lower ARP556, Monk Customs and EMG F1 lowers (w/ modifications)
MAXX Hopup Chambers (ATPRO, M4P, M4A) and Retro Arms hop-up chambers (drop-in)
G&G Stock hop-up, Lancer Tactical stock hop-up, Prowin hop-up (w/ modifications)
AirTac Customs CRBN Gearbox

Package Includes: Upper Receiver, 2x Red Fiber Optic Rods, Green Fiber Optic Rod, Sticker, Storage Bag
Material: Carbon Fiber, ABS Polymer, 6061 Aluminum

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AirTac Customs Gen 4 HPA CRBN Upper Receiver
(Color: Silver / 128mm)

ATC-HPA-CRBN-128-SILVER