Primary Airsoft Glock/AAP01 M4 HPA Angled Adapter


Sale price$99.99



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Frequently Bought Together

Complete your setup with the most common add-ons.

Compatibility and Functionality

This adapter allows you to use HPA (High Pressure Air) and M4 AEG magazines on your Glock airsoft pistol. To operate it, you'll need:
  • An M4 AEG magazine
  • A "paintball" tank with a low-pressure regulator (0-140 psi)
  • A hose with a Foster (Polarstar) quick disconnect
  • BBs for shooting

Operating Pressure Recommendations

The typical operating pressure for green gas is around 120 psi, though it may vary depending on temperature. We recommend running your pistol at or near this pressure, without exceeding 140 psi. Using pressures higher than recommended could cause excessive wear and damage to internal components.

Magazine Recommendations and Care

To achieve the most consistent performance, we recommend using high-quality M4 AEG magazines with strong springs. Important Magazine Care Tips:
  • Avoid leaving magazines loaded with BBs for extended periods, as it may cause the springs to fatigue and lose effectiveness.
  • If the springs become worn, replace them with Superfeed springs for improved performance.

Installation Instructions

For detailed instructions on installation, please watch the following video: Primary Airsoft Adapter Installation Tutorial: HPA and M4 Glock + Hi-Capa

Adapter Components and Compatibility

The adapter now includes:
  • A longer screw with a 2.5mm hex head
  • A universal feed tube that fits the following magazines:
    • WE Tech / Armorer Works G17 magazine
    • Tokyo Marui G17 magazine
    • Action Army AAP-01 magazine
    • Guarder Aluminum Magazine Case for G17

Adapter Compatibility with Airsoft Pistols

The adapter is compatible with the following pistols when installed on a WE, AW, or TM G17 magazine:
  • Elite Force Glock
  • KJ Works
  • SSP18
Please note that the adapter will not fit onto:
  • Elite Force Glock magazines
  • KJ Works magazines
  • Novritsch SSP18 magazines

Quick Disconnect Fitting

The metal quick disconnect fitting shown in the product images will come pre-installed. This is a US standard Foster Pneumatics 1/8 NPT quick disconnect. You can change the fitting to any 1/8 NPT threaded fitting, but be cautious not to cross-thread it during installation. Note: The adapter does not include a gun, magazine, or other accessories.

Design Purpose

This adapter was designed to level the playing field when using a pistol as a primary against AEGs with hi-cap magazines, enhancing your airsoft experience.

Common Product Questions

Find quick answers about our airsoft products, shipping and policies.

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.

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.

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.

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.

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.

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.