MG 34 semi-auto
Receiver Tutorial 5
These two photos show the area under the grip after being filled with
weld and ground. I used some pieces of steel as fillers. When filling in this
area you need to keep in mind that it needs to be ground flat to the same
height as the flat portions on the sides. This is where the trigger rollers will
run so it needs to be smooth and flat.
Inside the receiver section I have filled in the sear channel for about 1"
with weld. This is the block for the FA sear. You need to take care doing
this as it needs to be ground to a radius to clear the bolt body. The weld is
hard as glass and the tollerences are close, so take your time doing this
Be sure to test fit the bolt before proceeding to the next step. Once the
receiver is welded together this area is inaccessible and it will be very
difficult to correct any problems.
Now it is time to assemble the parts on the Jig for final fit up and
welding. The parts should be clean and de greased and all internal burrs
removed. Put a slight chamfer on the edges and recuperator holes. Clean
the jig and slide on the front section and the brass flat stock. It will be a
fairly tight fit, this is good.
Insert the brass tube into the recuperator hole, make sure it is clean and