Working on the MP-44 trunions.
We have started on Pete’s, a friend of gun lab, new 4140 MP-44 trunions. This series of videos and posts is the process we used to make them.
First the video.
Here are the pictures going over the changes and the steps we took.
We needed to change the depth of cut for the locking shoulder
We also did not put in the chamfer on the back of the block
Set up for ops one and two.
All of the trunions have now gone through ops one and two
the bored hole and start of gas tube cut out.
you can see the finish of the bored hole and the step for the barrel
All the 4140 and test trunions have now completed op 3.
OP 4 is coming up and will be next post on the MP-44 trunions.