2020-10-22 (Th) 80PercentArRifle

I started these instructions yesterday. Please start there, if you didn't.

When I clamped the jig into the vise, I noticed the guide's top lip overhung a bit, so I could not mill out the fire control area without running into the edges. After last time, I was nervous about removing too much plastic, so I have been going easy. My trigger components would not fit, so I needed to widen the hole.
Another pass to widen the fire control cavity

I knew from my previous receiver that I didn't need to clear every cubic micrometer, so long as my trigger and hammer could move fluidly. Instead of milling the sides over and over, I thinned the plastic around the holes. Once the milling bit was straight with the trigger pin holes, I raised it slightly and took a bit off both sides. I repeated this process for the hammer pin holes, but I still needed to take out more and find a cleaner method. Fortunately, everything I've done so far has been erring on the side of caution.
Milling the trigger pin hole area

The rest of the posts for this project have been arranged by date.
First time here?


Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7

Disclaimer for http://24hourengineer.blogspot.com and 24HourEngineer.com

This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information on this blog, or linked by this blog, is not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property, or similar, is the responsibility of those involved in the replication.

All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by  Brian McEvoy, cannot be used to claim property or assets.

Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.
2020-10-18

Comments