This is one of the coolest 3D build kits ever put together! This build kit comes with all the parts needed to print your own AR-15 chambered in .410

Cheap, controllable, and AVAILABLE. The .410 is a great round to have in an AR-15 platform. The lower receiver and buffer system is identical to that of an AR-15 platform. You can swap any complete AR-15 upper receiver onto this build.

The lower receiver on this SD card uses NO HARDWARE…..I REPEAT, NO HARDWARE!  There are 2 files on this SD card: A raw STL file for modification, and a print ready G CODE waiting for you to plug and play.


In stock


This kit contains:
  • A Micro SD card that contains
    • Raw STL for an AR15 lower receiver
    • Designed to be used with an Ender 3v2 or equivalent
    • PLA Plus/Pro/Max compatible
  • Forged Upper Receiver
  • 18” Barrel
    • Chambered in .410
  • .410 Bolt Carrier Group
  • AR-15 charging handle
  • Forged handguard
    • Top and bottom picatinny rail
  • Custom barrel shroud
  • Mil-spec buffer tube assembly
    • Buffer spring
    • Buffer weight
    • Castle nut
    • End plate
  • Adjustable stock
  • One 10 round .410 magazine
  • AR-15 lower parts kit with A2 grip

**Original lower designed by Matthew Elder**


WARNING: This product is to be installed by a competent gunsmith. No liability is expressed or implied for damage or injury which may result from installation or use of this product.

DISCLAIMER: At, we by no means provide legal advice or legal counsel. Every builder needs to research their respective State laws and Federal laws. We DO NOT provide gunsmithing advice. is not responsible for improper builds, damage, or injury due to user error.