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AEX Custom Death Adder

Available

$559.99


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AEX Custom Death Adder  AAP-01 HPA, FDE / Black

Your sidearm just became your primary.

This isn’t your average AAP-01. Built from the ground up for performance, durability, and straight-up style, this custom HPA-powered Action Army AAP-01 Assassin is ready to dominate the field. Finished in Flat Dark Earth and accented with premium black CNC upgrades, this build brings together the best of CTM TAC, Action Army, and PTS for a pistol that hits harder, cycles faster, and feels cleaner than anything else out there.


 Key Features:


The M4XIMUS Kit – HPA Redefined

Let’s talk about what makes this build next-level: the CTM Maximus HPA Frame Conversion Kit, affectionately dubbed the M4XIMUS. This isn't just a frame swap—it's a complete evolution of the AAP-01 platform. With integrated M4 buffer tube and grip compatibility, you can now run full rifle ergonomics on a pistol-sized platform. The M4XIMUS delivers unmatched control, improved shoulder stabilization, and opens up endless customization potential with AR-compatible stocks and grips.

The solid Tan polymer and CNC aluminum reinforcements make it rugged, field-worthy, and absolutely killer in terms of style. Whether you're running CQB or looking for a sleek secondary that feels like a primary, the M4XIMUS frame is what makes it possible.


 Ideal For:

  • Speedsoft and CQB players who want rifle-level performance in a compact package

  • HPA users looking for a slick, highly customizable platform

  • Players who love full-auto mayhem with consistent performance


This custom AAP-01 HPA build is more than a sidearm—it's a statement. Lock it in, plug it into your tank, and let the M4XIMUS dominate.

Specifications

Overall Length: 10" (stock collapsed) 
Weight: 2 pounds (with magazine)
Inner Barrel Length:  129mm
Firing Mode: Semi-Automatic, Automatic
Magazine Capacity: 175
Power Source: HPA
Hop-Up: Adjustable