Fallout AER9 Laser Rifle (Nerf blaster mod from Sillybutts' Breacher)

If you want to buy me a coffee :) https://buymeacoffee.com/methanejuice

This is a project with Dr Flux, and featured in his video :)

Beware: The mod reduces the capacity to 3+1. That and this blaster is almost a meter long and ~6 kg

Update

20261006: BackPTcover and FrontPTcover older ver change to new ones with heat sets insertion points added for scope attachment

20261015: Update 3mf and stl files to reflect. Thanks to user Gravebound_1270937 for sharing these:

1. Screw hole access, part "BarrelBack"

   

2. Update STL with latest fusion cell with screw holes

20261018: Update to "TriggerLink4_V2", for the old one was too thick for the trigger to be engaged and I forgot about it... Thanks to ProjectsInDadsGarage for sharing it.

BOM

• Breacher kit

• #4x3/8" screws Qty 35

• M4X40 screw Qty 4

• M3X25 screw Qty 5

• M3X16 screw Qty 2

• M3 Heat Set Inserts Qty 4

• M3 Nuts Qty 2

• M4 Nuts Qty 4

• Ball Detent 6x7mm Qty 1

Printing

Instruction

Front section

Everything is similar to the og Breacher, with minor differences

1. Choose tip with or without front sight post. Glue on laser pointer parts

Install qty 2 of the 8-32 or M4 inserts at the front of [Tip] or [Tip(iron sight)], in the top two holes

2. Add qty 2 of the, 12” 8-32 or M4 rods

3. Install qty 2 of the 8-32 or M4 inserts at the front of [BarrelFront_LR], in the bottom two holes

4.  String these two pieces with the rods; fasten with qty 2 M3x30 and qty 3 #4x3/8" or 4-40x3/8" screws

5.  Build the grip (form this U shape) around the BarrelBack, secure with qty 6 M3x12 screw andf qty 2 POM bearings

6. Assemble into the front and install the threaded rods and bolts like the OG breacher

Back Section

Assemble the stock&grip section first (red), assemble the plunger&bolt section like the og breacher

7.  Assemble the stock&grip with qty 15 #4 screws an qty 2 of M3x40 screws and nuts

Here you can add glue between the panels to help strengthen things

8.  Assembly of the back half is very similar to OG breacher

9.  The exceptions are the fake fusion cell latch, which consists of two swing arms with gear teeth, one gear in the middle, a pin that secures that middle gear, and an M3x25 screw that secures the two arms. These all fit inside an enclosure

10. Install all the internal bits (ejectors, ramp, shell stops) beforehand and leave the yellow trims the last. Cover the front of the Shell Stops with their respective plugs and secure with qty 2 #4 screws on each side. The tripper Nylon spacer is installed from the left side and plugged up

11.  The back of the body is assembled the same as the OG Breacher, with the cosmetic pits sandwiched in the middle

12.  Hold the back side open just enough to fit in the stock&grip, before closing and securing with nuts

Secure the top cosmetic part with qty 1 #4 screws

13.  Add in the cosmetic power line and the fusion cell with qty 2 #4 screws

14.  Add in the lower cosmetic frame with qty 9 #4 screws

Scope

Option scope on the side