[Group Buy] AMJ40 40% Mechanical Keyboard Kit

From: $176.64

The AMJ40 – 40 Percent Keyboard with Aluminum case and plate.

Please read everything below before ordering to understand the available configurations/layouts.

Group Buy runs until July 1, 2019

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This is a Group Buy for the AMJ40  – A 40% keyboard with a high quality PCB and an anodized aluminum case and plate.

The AMJ40 comes in two main configurations: Staggered or Ortholinear.

There are 4 possible layouts for Staggered and 2 possible layouts for Ortholinear.

While the PCBs are the same for either Staggered or Ortholinear, the plates are different.

The board uses a mini USB port for maximum durability.

There are many different combinations to choose from, so please carefully take a look at what is available below.

Check Discord for updates.

Join the AMJ40 Discord Channel Here: Discord

Available in the group buy:

Main Kit $150 per kit

  • AMJ40 PCB
  • Aluminum case
  • Plate
  • Screws
  • Rubber Feet

Staggered Kit

AMJ40 Case Kit Blue


Ortholinear Kit

AMJ40 Ortholinear Kit


Additional Parts for Kit:

If you are purchasing from the U.S., you may purchase anything listed below or anything else in the store to include with your order.

If you are international, you may only add the below items to your order unless you contact us by email with a special request.

The AMJ40 requires stabilizers, LEDs, switches, and mini USB cable to complete the build.


Staggered layouts requires 42 switches.
Ortholinear layouts require 46 switches.
The following switches are available for purchase:

Cherry MX Clear Switches
Gateron Switches
Gateron Silent Switches
Kailh Speed Switches
Kailh Box Switches
Kailh Pro Purple Switches
Aliaz Switches
Greetech Brown Switches

See 6 possible layouts below.

Layouts 1 and 3 need two 2u stabilizers.

Layouts 2 and 4 need one 6.25u stabilizer.

Layout 5 needs one 6u stabilizer.

Layout 6 needs one 2u stabilizer.

Stabilizers are available here:

Cherry Stabilizers

Transparent Stabilizers


Staggered requires 42 LEDs
Ortholinear requires 46 LEDs.

LEDs are available here: Switch LEDs



Looking for a set of keycaps that will completely cover the AMJ40?

These DSA sets have all the keys necessary to cover any of the 6 layouts: DSA PBT Keycaps


Assembly There is also the option of having the keyboard coming assembled. In order to get this done, you will also need to order all of the necessary additional parts listed above as well. You will also need to specify which of the 6 layouts you wish to have. Please look at the picture below for the layouts. Assembly will cost $30 USD.

Layouts and Colors:

Aluminum cases come in 13 colors: Orange, Silver, Gold, Titanium Grey, Light Blue, Dark Blue, Black, Light Pink, Purple, Fluorescent Green, Yellow, Peach Red, and Red.

You can see the actual colors of the cases below:

AMJ40 Aluminum Case Colors


and also Orange:

AMJ40 Orange Case Top



6 Layout Options:

AMJ40 Layouts


OEM Keycap Layout:

AMJ40 OEM Profile Keycap Layout



The keyboard can be flashed with the tools that AMJ has provided: HERE

Do not use the included firmware files that are provided with the flashing tool, as they are for the v1 board which has a different bottom row layout.

Guide to building a keymap and flashing it to the keyboard: HERE

The TMK firmware with support for the v2 boards can be found here: Github

You can also use my QMK port here: Github


GB Timeline:

  • May 16th, 2019: Group Buy Period Begins
  • July 1st, 2019: Group Buy Period Ends
  • About 12-16 weeks later: All orders are shipped out.

Additional information

Case Color

Silver, Gold, Titanium Grey, Orange, Light Blue, Dark Blue, Black, Light Pink, Purple, Fluorescent Green, Yellow, Peach Red, Red


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