Airsoft Upgrades

CTM AAP-01 M4XIMUS HPA Kit

Brand: CTMCategory: HPA Guns3 retailers

Price: $136.25 – $163.50 — In stock at 2 retailers.

Prices last checked August 21, 2026 across 3 retailers.

This product requires DIY skills. You must have punches of different diameters, a rubber mallet, and Allen wrenches in various sizes, etc. Material : Nylon+42% fiberglass + CNC Aluminum 6061 Color : BK, TAN, PNK Weight : 310 g Supportable Holster : GA Holster This kit does not include the following parts: · Hammer housing. ✖ · Hammer set. ✖ · Upper locking button. ✖ · Locking button spring. ✖ · Trigger lever. ✖ · Trigger spring. ✖ · Magazine release button. ✖ · Magazine release spring. ✖ · Magazine nozzle seal / gas route rubber. ✖ Why did we name this product "M4XIMUS"? Because we took the name "MAXIMUS" and gave it a creative twist, turning it into "M4XIMUS." Our goal is simple: when you use this kit, we want you to feel as powerful as the legendary movie character Maximus. With this kit installed and an M4 magazine in place, you’ll dominate the battlefield like never before. As for the name itself, we replaced the "A" in MAXIMUS with the number "4" because they look similar. Plus, this product is specifically designed as an adapter for AEG M4 magazines, so the name "M4XIMUS" perfectly ties into its purpose and adds a unique flair. When it comes to design, the biggest challenge was ensuring that BBs move smoothly inside the kit, from the M4 magazine entrance to the pistol mag. The entire pathway had to be seamless, which made development incredibly tough. On top of that, we even designed a custom pistol magazine specifically for M4XIMUS. This added another layer of complexity—and cost—to the development process, but we went the extra mile to make sure this kit is as complete and polished as possible. We poured our heart and soul into this product so you can truly feel the passion and dedication behind it. In terms of compatibility, M4XIMUS works with a wide range of AEG M4 magazines, including popular brands like PTS, Poseidon, Guarder, G G, and many more. Just like the character Maximus, this kit is built to adapt to any environment and deliver peak performance w

CTM AAP-01 M4XIMUS HPA Kit price comparison: the lowest price is $136.25 at Ebog Designs, the highest is $163.50, and the median across 4 tracked listings is $149.88. Comparing retailers can save up to 17% ($27.25) versus the highest-priced listing.

Compatible with: M4/AR, AAP-01, HPA, AEG

See all AAP-01 magazines & fitment →

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Where to buy the CTM AAP-01 M4XIMUS HPA Kit: prices at 4 retailers

  • Ebog Designs: $136.25 — In Stock
  • Ebog Designs: $136.25 — Out of Stock
  • Defcon Airsoft: $163.50 — Out of Stock
  • TS Airsoft: $163.50 — In Stock

Frequently asked questions about the CTM AAP-01 M4XIMUS HPA Kit

How much does the CTM AAP-01 M4XIMUS HPA Kit cost?
The CTM AAP-01 M4XIMUS HPA Kit ranges from $136.25 to $163.50 across 3 retailers. The lowest current price is at Ebog Designs. Prices are updated regularly from each store's live catalog.
Where can I buy the CTM AAP-01 M4XIMUS HPA Kit?
The CTM AAP-01 M4XIMUS HPA Kit is currently in stock at 2 retailers including Ebog Designs, TS Airsoft. We track availability across 3 airsoft stores and update stock status regularly.
What is the CTM AAP-01 M4XIMUS HPA Kit compatible with?
M4/AR, AAP-01, HPA, AEG
Is the CTM AAP-01 M4XIMUS HPA Kit a good hpa guns upgrade?
The CTM AAP-01 M4XIMUS HPA Kit by CTM is listed in our HPA Guns category and is priced from $136.25. We aggregate prices from 3 retailers so you can compare and find the best deal. Check the price comparison table above for current pricing from each store.

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