Check out our CO2 HPA Adapter overview video: https://youtu.be/UiETEysEMDI The LA Innovations x Polarstar CO2 HPA Adapter truly revolutionizes the way that players use HPA. This adapter is the only product on the market that allows you to use 74g and 88g CO2 cartridges. No more need to use that big and heavy HPA tank. Polarstar OEMs this product, incorporating a special adjustable outflow valve to ensure that liquid CO2 never reaches your regulator. We recommend the Polarstar Micro Regulator, but this adapter will work for any regulator. CO2 Shot Output:
- 74g Cartridge Output - 800+ pistol shots or 1500+ rifle shots
- 88g Cartridge Output - 1000+ pistol shots or 1800+ rifle shots
Benefits of using CO2 over HPA:
- Much smaller tank size relative to HPA
- Over 3x the gas per volume
- Easily swap cartridges when empty, no need for refills
Use Cases:
- Lined HPA rifle/pistol - easily run a line to your belt or pocket, no need for big tanks and heavy backpacks!
- HPA Tank Grips - easily unscrew and screw in a new cartridge when one is empty, small and lightweight cartridge size, padded sleeves will be available to mimic a full sized HPA tank!
- Milsim - instead of having several tanks or an HPA compressor, toss a few cartridges in your backpack and be set for the entire weekend!
Common Product Questions
Find quick answers about our airsoft products, shipping and policies.
Will this part fit my platform?
Compatibility is product-specific. Check the brand, model, size, and platform named in the product description, such as Tokyo Marui Hi-Capa 4.3 or 5.1, AAP-01, Umarex/VFC Glock, or a particular AEG gearbox type.
Similar-looking parts are not always interchangeable, so contact our team with your exact model if you are unsure.
Do I need tools or gunsmithing?
That depends on the upgrade. Simple external parts may be straightforward, but internal upgrades can require disassembly, reassembly, adjustment and testing.
If you are not comfortable working inside your airsoft gun, our team offers professional tech and custom-build services.
Can LA Airsoft install this part for me?
Yes. We can build and upgrade Hi-Capas, AAP platforms, and rifles. Choose your base gun and parts, then add the appropriate tech service.
The current custom-build service states that builds are normally completed in approximately 3 to 5 days, with the team reviewing the selected parts for compatibility.
How should I maintain this product?
Regular maintenance helps preserve performance and reliability. Keep the product clean, follow the manufacturer’s lubrication instructions, and properly manage batteries, gas systems, and internal components. More advanced repairs or internal servicing should be handled by an experienced airsoft technician.
How quickly will my order ship?
Orders without preorder items are typically packed the same day when placed before 4:30 p.m. Central Time. Please note that occasional delays can occur during especially busy periods or when staffing is limited.
Will this part increase my FPS?
Not every upgrade increases FPS. Some parts are designed primarily for reliability, cycling speed, weight reduction, or gas efficiency. When a product has a tested FPS claim, it should be stated in the listing.