Use this Stock Folding Mechanism / Folding Stock Hinge with Manticore , ACE, Tromix , HDPS skeleton stocks, as well as StormWerkz Universal Carbine adapter which uses Ar-15 carbine stocks.
-This hinge locks solid in both positions
-Tapped for sling stud
-Mounting bolts(10-32 Socket Cap Screws) included
-Mounting holes are .625 center to center