5.56 Pistol build 5
Fitting the magazine is critical, it needs to fit right up against the ejector
rail. You will need to test fit it with the selector stop plate in place and grind
the plate till the mag is up high enough.
rail. You will need to test fit it with the selector stop plate in place and grind
the plate till the mag is up high enough.
Once the height is correct you can rivet it together. Next step is to locate
the front trunnion. Push it back with a mag in place until the mag is tight
and clamp it, then remove and insert the mag to make sure it fits and locks
up properly.
the front trunnion. Push it back with a mag in place until the mag is tight
and clamp it, then remove and insert the mag to make sure it fits and locks
up properly.
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Once the trunnion is located grind the front of the receiver flush with
the trunnion. Now the rivet holes can be located.
the trunnion. Now the rivet holes can be located.
The trunnion needs 2 more rivet holes drilled in it. The new holes are
.693" back from the top front ones. I use a square and razor knife to mark
the centers of the rivet holes on the trunnion. Then transfer them to the
trunnion with the square.
.693" back from the top front ones. I use a square and razor knife to mark
the centers of the rivet holes on the trunnion. Then transfer them to the
trunnion with the square.