Universal Gas Stock UGS HPA Stock System (Model: Type 2 / 33g TM Spec Receiver)
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$390.00
The PolarStar Universal Gas Stock UGS™ HPA Stock System – Type 2 / 33g TM Spec Receiver features an integrated gas-regulation and stock system with a 33g CO2 configuration, designed for compatible Tokyo Marui-spec Airsoft receivers. This Type 2 model offers an onboard gas-source alternative to a conventional external HPA tank and remote line. Verify receiver fitment, engine compatibility, and included components before purchasing.
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POLARSTAR UNIVERSAL GAS STOCK UGSâ„¢ HPA STOCK SYSTEM
TYPE 2 // 33G CO2 CONFIGURATION // TM-SPEC RECEIVER
POLARSTAR UGS™ | TYPE 2 TM-SPEC | 33G CO2 INSERT INCLUDED | INTEGRATED REGULATOR | 40–130 PSI STANDARD OUTPUT | ADJUSTABLE STOCK SYSTEM | F2 / F1 / JACK COMPATIBILITY
INTEGRATED AIR. STREAMLINED DESIGN.
PolarStar engineering in a compact, adjustable stock system.
The PolarStar Universal Gas Stock UGS™ HPA Stock System – Type 2 / 33g TM Spec Receiver combines onboard gas storage, integrated regulation, and adjustable stock functionality in one specialized recreational airsoft accessory.
Designed for compatible Tokyo Marui-spec M4 AEG receivers, this configuration includes a 33g CO2 insert and a dedicated CO2-compatible stock rail.
The UGS provides an alternative to conventional remote-line HPA configurations while preserving the recognizable appearance of an adjustable AR-style stock.
Its integrated regulator shares the internal architecture of the PolarStar Micro Reg and features a manufacturer-specified standard output range of 40–130 PSI.
Compatible with supported PolarStar F2, F1, and JACK cylinder-conversion engines, the Type 2 UGS brings together compact construction, modular gas-system architecture, and familiar stock functionality.
33G CO2 CONFIGURATION. // TM-SPEC RECEIVER. // INTEGRATED REGULATION.
01 // UNIVERSAL GAS STOCK ARCHITECTURE
Compact onboard gas storage.
The PolarStar UGS integrates its gas-regulation system into an adjustable stock assembly.
This design allows compatible recreational airsoft HPA equipment to use an onboard gas supply rather than a conventional external air line.
Its compact architecture maintains the appearance of a traditional adjustable AR-style stock while incorporating specialized gas-system components.
The Type 2 / 33g configuration is specifically supplied for compatible threaded 33g CO2 cartridges.
It represents a distinct option within the wider PolarStar UGS product family.
02 // MICRO REG-BASED REGULATOR
Compact regulation with proven design principles.
The UGS features an integrated regulator based on the PolarStar Micro Reg architecture.
Its standard manufacturer-rated output range is 40–130 PSI.
PolarStar states that the UGS shares interchangeable internal components with the Micro Reg, excluding the piston.
The regulator incorporates only two O-rings, reflecting an emphasis on component simplicity and serviceability.
Compatible high-pressure and super-low-pressure input regulators are supported, with SLP recommended by the manufacturer.
The system also includes a tournament-lock provision for regulated recreational events.
03 // 33G CO2 INSERT CONFIGURATION
Dedicated cartridge compatibility.
This version of the UGS includes the PolarStar 33g CO2 insert.
Unlike the 12g configuration, the 33g model is intended for compatible threaded CO2 cartridges.
PolarStar identifies cartridge part number 10000332 for this configuration.
The dedicated CO2 stock rail supports the integration of the insert within the stock assembly.
This distinguishes the 33g version from the standard 2-inch HPA tank configuration and the smaller 12g CO2 model.
33G INSERT INCLUDED. // THREADED CARTRIDGE FORMAT. // COMPACT STOCK ARCHITECTURE.
04 // TYPE 2 TM-SPEC RECEIVER DESIGN
Compatibility with traditional M4 AEG interfaces.
The Type 2 UGS is intended for compatible traditional Tokyo Marui-spec M4 AEG receivers.
These designs typically feature a rear stock extension onto which the buffer tube fits and is secured by a retaining bolt.
This differs from Type 1 receivers, which accept directly threaded buffer tubes.
PolarStar specifies that receiver and gearbox modification are required for Type 2 installation.
Because fitment is platform-specific, compatibility should be assessed by a qualified airsoft technician before purchase.
05 // ADJUSTABLE STOCK & MODULAR PLATFORM
Familiar appearance. Specialized functionality.
The UGS retains adjustable length-of-pull functionality, providing the familiar profile of a traditional adjustable stock.
PolarStar offers separate stock-rail configurations for compatible 2-inch HPA tanks and CO2 inserts.
The wider UGS platform supports standard 2-inch-diameter tanks and many compatible paintball-style tank stocks when equipped with the appropriate HPA configuration.
This particular model is supplied in the 33g CO2 configuration, not the 2-inch HPA tank configuration.
A complete buttstock is not explicitly confirmed in the supplied package contents.
06 // POLARSTAR ENGINE COMPATIBILITY
Designed for cylinder-conversion HPA systems.
The UGS supports compatible PolarStar F2, F1, and JACK cylinder-conversion engines.
PolarStar also identifies certain comparable cylinder-based HPA systems as potential applications, subject to compatibility.
The package includes a castle nut and mounting hardware.
Its integrated design combines onboard gas storage, regulation, and stock functionality into one specialized assembly.
Important: The PolarStar UGS is not compatible with the Fusion Engine.
PERFORMANCE ARCHITECTURE
POLARSTAR UGSâ„¢ // TYPE 2 // 33G CO2
Manufacturer: PolarStar
Product: Universal Gas Stock UGSâ„¢
Model: Type 2 / 33g TM Spec Receiver
Gas Configuration: CO2
Included Insert: 33g CO2
Compatible Cartridge Format: Threaded 33g CO2
Referenced Cartridge Part Number: 10000332
Receiver Interface: Compatible TM-Spec M4 AEG
Regulator Architecture: PolarStar Micro Reg-Based
Standard Output Range: 40–130 PSI
Input Regulator Compatibility: HP / SLP — SLP Recommended
Regulator O-Rings: 2
Length of Pull: Adjustable
Compatible PolarStar Engines: F2, F1, JACK
Incompatible Engine: Fusion Engine
Tournament Lock: Zip-Tie Lockout Provision
Included Hardware: Castle Nut and Mounting Hardware
Required Modification: Receiver and Gearbox
Alternative Configurations: Separate HPA and CO2 Stock Rails
IMPORTANT COMPATIBILITY & PRODUCT INFORMATION
The PolarStar UGS Type 2 / 33g TM Spec Receiver includes a 33g CO2 insert and is intended for compatible TM-spec M4 AEG receivers.
It is not compatible with the PolarStar Fusion Engine.
Receiver and gearbox modification are required. Professional compatibility assessment and installation are recommended.
The 12g CO2 and 2-inch HPA tank configurations require their corresponding compatible components.
A CO2 cartridge and complete buttstock are not explicitly confirmed as included.
Use only manufacturer-approved gas-system components and follow applicable equipment and recreational airsoft field requirements.
POLARSTAR UNIVERSAL GAS STOCK
TYPE 2 // 33G CO2 // TM-SPEC RECEIVER
The PolarStar Universal Gas Stock UGSâ„¢ Type 2 / 33g TM Spec Receiver combines onboard CO2 storage, integrated regulation, and adjustable stock functionality in a compact recreational airsoft system.
For Canadian customers researching a PolarStar UGS Type 2 Canada, PolarStar 33g CO2 Stock System, TM-Spec HPA Stock, or PolarStar F2 F1 JACK Gas Stock, this model offers a specialized alternative to conventional remote-line configurations for compatible airsoft platforms.
POLARSTAR // INTEGRATED AIR SYSTEM TECHNOLOGY
TYPE 2 // TM-SPEC RECEIVER // 33G CO2 INSERT // MICRO REG ARCHITECTURE
INTEGRATED AIR STORAGE. // COMPACT REGULATION. // POLARSTAR ENGINEERING.
| Weight | 2 kg |
|---|---|
| Dimensions | 12 × 9 × 6 in |
| Product Specifications | Compatibility: M4 / M16 AEG's w/ TM Spec Threaded Buffer Tubes |
FAQ
â—‰ POLARSTAR UGSâ„¢ TYPE 2 / 33G // FAQ DATABASE â—‰
Explore the PolarStar UGSâ„¢ Type 2 / 33g CO2 configuration, an integrated gas-regulation and adjustable stock system designed for compatible TM-spec recreational airsoft platforms. Featuring a 33g CO2 insert for compatible threaded cartridges, the UGS combines onboard gas capability with a regulator based on PolarStar Micro Reg architecture. Discover its engine compatibility, receiver requirements, stock features, regulator specifications and important installation considerations below.
What is the PolarStar UGS Type 2?
The PolarStar UGS Type 2 is an integrated gas-regulation and adjustable stock system designed for compatible TM-spec recreational airsoft platforms.
Is this the 33g CO2 version?
Yes. This PolarStar UGS Type 2 configuration includes a 33g CO2 insert.
What cartridges does the 33g model accept?
The 33g configuration is designed for compatible threaded 33g CO2 cartridges. Cartridge compatibility should be confirmed against PolarStar’s specifications.
Is a CO2 cartridge included?
The 33g CO2 insert is included, but the supplied package information does not confirm that a CO2 cartridge is included.
What is the difference between Type 1 and Type 2?
Type 1 supports directly threaded receiver interfaces, while Type 2 is intended for traditional TM-spec receiver interfaces. The two configurations have different receiver compatibility requirements.
Does the UGS require a remote air line?
No. When configured with its compatible onboard gas supply, the UGS does not require a remote air line.
Which PolarStar engines are supported?
The UGS Type 2 supports compatible PolarStar F2, F1 and JACK cylinder-conversion systems.
Is it compatible with the Fusion Engine?
No. The PolarStar UGS Type 2 does not support the Fusion Engine.
What is the standard regulator output range?
The standard integrated regulator has a manufacturer-rated output range of 40–130 PSI.
Is the regulator based on the Micro Reg?
Yes. The UGS regulator shares the same basic internal architecture as the PolarStar Micro Reg.
Does the stock have adjustable length of pull?
Yes. The UGS stock system features adjustable length of pull.
Can the UGS support a 2-inch HPA tank?
The wider PolarStar UGS platform supports compatible 2-inch-diameter HPA tanks when equipped with the appropriate separately configured HPA stock rail. This should not be assumed to be part of the 33g CO2 configuration.
Does Type 2 require modification?
Yes. PolarStar specifies that receiver and gearbox modification are required for the Type 2 configuration. Installation should be assessed by a qualified airsoft technician.
Does it have a tournament-lock provision?
Yes. The PolarStar UGS Type 2 includes a zip-tie lockout feature intended for applicable tournament-lock requirements.
What makes the PolarStar UGSâ„¢ Type 2 / 33g CO2 configuration stand out?
The PolarStar UGS™ Type 2 / 33g CO2 is an integrated gas-regulation and adjustable stock system designed for compatible TM-spec recreational airsoft platforms. Unlike the Type 1 configuration intended for directly threaded receiver interfaces, Type 2 supports traditional TM-spec receiver designs. This version includes a 33g CO2 insert intended for compatible threaded 33g CO2 cartridges, providing an onboard gas-supply configuration without the need for a remote air line. The UGS Type 2 supports compatible PolarStar F2, F1 and JACK cylinder-conversion engines, while the Fusion Engine is excluded. Its integrated regulator shares the same basic internal architecture as the PolarStar Micro Reg and features a standard manufacturer-rated output range of 40–130 PSI. The stock system offers adjustable length of pull and includes a zip-tie tournament-lock provision. The broader UGS platform also supports compatible 2-inch-diameter HPA tanks through an appropriate separately configured HPA stock rail, although that configuration should not be confused with this 33g CO2 version. The 33g CO2 insert is included, but cartridge inclusion is not confirmed. PolarStar specifies receiver and gearbox modification for Type 2 installation. With its onboard CO2 configuration, integrated regulation and defined PolarStar engine compatibility, the UGS Type 2 / 33g provides a specialized stock-system option for compatible recreational airsoft equipment.
RECEIVER AND ENGINE COMPATIBILITY MUST BE VERIFIED BEFORE PURCHASE. The PolarStar UGS Type 2 is intended for compatible traditional TM-spec receiver interfaces and differs from Type 1, which supports directly threaded receivers. It supports compatible F2, F1 and JACK cylinder-conversion systems but does not support the PolarStar Fusion Engine. PolarStar specifies receiver and gearbox modification for Type 2 installation. This configuration includes a 33g CO2 insert designed for compatible threaded 33g cartridges; cartridge inclusion is not confirmed. The integrated regulator has a standard rated output range of 40–130 PSI. Compressed-gas components must be manufacturer-approved and compatible, and installation or servicing should be performed by a qualified airsoft technician. A separate HPA stock rail configuration is required for the wider platform’s compatible HPA tank applications. Confirm receiver fitment, engine compatibility, gas-supply specifications and exact package contents before purchase.
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