-Use this Stock Folding Mechanism / Folding Stock Hinge with Sig, JMAC, and other stocks and struts with a chamfered mounting end.-No need to buy a picatinny adapter if you already have a drilled and tapped adapter.
-This hinge locks solid in both positions
|Custom Stock Folding Mechanism Install|
|-The rear trunnion needs to be drilled and tapped using a #21(.159)drill|
and 10-32 tap(gun point tap preferred)
-The holes are .625 center to center
-The position of the hole pattern is centered vertically and
horizontally on the rear trunnion.
-Once the hole locations are marked use a center punch to indent the
-Use a spot or center drill to make divots which help keep the #21 drill
-Drill the holes with a #21 drill, some people start with a smaller
drill and then follow with the #21
-Tap the holes with the 10-32 tap, a high quality tap makes a big
difference in the operation, we use Cleveland but there are lots of
-Use go slow and use cutting oil on all drill and tap operations.