SA PPK-20 GBB (SA-J20 VAPOR™) SMG – Black

Specna Arms PPK-20 SA-J20 VAPOR™ GBBR

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The Specna Arms PPK-20 SA-J20 VAPOR™ was developed in cooperation with Well Pro and is aimed at players who want to experience realistic weapon handling and behavior in airsoft. The combination of a steel body, aluminum internal parts and polymer accessories ensures excellent durability even during demanding gameplay. Thanks to the GBB system with blowback, you get a strong recoil impulse and highly realistic shooting behavior. The SMG is equipped with an NPAS power adjustment system, allowing you to fine-tune muzzle velocity as needed. The ergonomics follow the modern PPK-20 platform, including ambidextrous controls and an adjustable stock. RIS rails and M-LOK slots on the handguard allow mounting accessories such as a tactical flashlight, laser module or red dot sight. Overall, this is an SMG ready for Mil-Sim airsoft, manipulation training and regular gameplay.

Key Features of the Specna Arms PPK-20 SA-J20 VAPOR™ GBBR

Realistic Blowback

Strong recoil impulse for maximum shooting realism.

Steel Construction and Aluminum Internal Parts

Steel critical components ensure excellent durability and long service life.

NPAS Power Adjustment

NPAS allows precise power tuning according to field limits or personal preference.

RIS Rails and M-LOK Slots

Allows mounting accessories such as a red dot sight, tactical flashlight or PEQ box.

Modern PPK-20 Ergonomics

Adjustable stock and ambidextrous controls.

Specna Arms PPK-20 VAPOR™ GBB

Gas-powered PPK-20 SMG with realistic behavior and strong blowback.

Technical Specifications

• Power System: Gas (GBB)
• Blowback: Yes
• Length: 610-690 mm
• Weight: 3045 g
• Material: Steel, aluminum, polymer
• Muzzle Velocity: 97 m/s (0.95 Joule)
• Fire Modes: Semi, full-auto
• Hop-up: Yes
• Inner Barrel Length: 400 mm
• Magazine Capacity: 38 BBs
• Magazine Type: Low-cap, gas
• Thread: 14 mm CCW
• Platform: PPK-20
• Recommended Gas: Green Gas

Package Contents

• 1× PPK-20 SA-J20 VAPOR™ gas SMG
• 1× 38 BB gas magazine
• 1× speedloader
• 1× cleaning rod
• 1× hex key

Warning

• After purchasing the gun, it is recommended to thoroughly clean excess grease around the nozzle, hop-up chamber and trigger mechanism. Afterwards, lightly lubricate moving parts and seals with quality silicone oil. If you are unsure how to proceed, check out our article.
• Oil or lubricant must never get inside the hop-up chamber or onto the BBs inside the magazine. This would negatively affect both range and accuracy.
• After cleaning the gun, it is necessary to activate or slightly adjust the hop-up pressure, otherwise the BBs may roll out of the barrel.
• The SMG must be regularly lubricated with silicone oil (seals, moving parts and trigger mechanism).