Action Army AAP01 Upper Receiver Kit


Sale price$174.99



Style: Alpha
  • Secure Checkout
  • SHIPS SAME DAY
  • 14 DAY RETURNS
The Action Army AAP01 Upper Receiver Kit upgrades your AAP-01 GBB pistol with a new CNC-aluminum upper receiver, charging handle, and hop-up unit. The redesigned ejection port and picatinny rail on top make it easy to mount accessories. The new charging handle is ergonomic and the hop-up unit is adjustable for both hop and BB weight. This kit is a must-have for any AAP-01 owner who wants to improve the performance and accuracy of their pistol. It is also a great way to customize your AAP-01 and make it look unique.
  • New upper receiver made from CNC-machined aluminum
  • Redesigned ejection port
  • Picatinny rail on top for mounting accessories

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.