Avalanche_Abbasy's "What Would Stoner Do?" Complete Polymer AR15 Receiver Overview


Avalanche_Abassy (V.1 - 3)

Testers (Special Thanks)

GunnyMcGunsmith (WindowsTheos) <- Check out his youtube channel for a completed build




3.0 (M3)


This is a complete 3D Printed AR15 Lower Receiver inspired by the likes of Inranges's WWSD build series featuring the CAV-15 Polymer Lower. While that lower was designed to be injection molded, I have created a derivative designed to take advantage of 3D printing.

Simmilar to Warfairy's Charon, the lower is printed in parts and includes a fixed buttstock and grip. Provisions have been made to make the lower suitable to being printed in different plastics such as PLA or PETG.

To assemble the lower receiver itself, a minimal amount of tools is nessecary. In order to get a quality, long lasting receiver as a result of this project the builder must be patient with the assembly (Unlike me).

Instructions (Will be split into parts depending on what configuration is being built)

Parts Needed (Base Version):
9mm Magwell
Materials: PLA (Hatbox PLA as benchmark)
PETG (Inland PETG as benchmark)

As of writing this guide, Nylon and fiber filled filaments are untested, use at your own risk. If you decide to use unlisted matireals, share your results with Avalanche_Abassy

Build Guide

The basic assembliy goes as follows:

9mm Magwell

The 9mm Magwell requires additonal steps

*The Magazine catch uses a single screw and two levers, each lever is held in place by a 2mm OD rod, which can be a bolt or a rod that is glued in place *9mm AR15s require an ejector, a STL for a ejector that is held in place by two screws is included, however, it is reccomended that the ejector be fabricated out of sheet aluminum instead *If the 9mm bolt carrier does not clear the ejector, sand off the top of the ejector untill the function is smooth


The AR15 uses a 1/4-28 (fine) bolt as a gripscrew, if using the gripscrew version i reccomend either using a 1/4-20 (coarse) Threaded insert in the hole for the screw OR gluing a 1/4" Threaded rod into the hole instead