Kit, Rebuild, Thread Insert, Chamber Door, Bolt Threads, 3900. Insert Repair Kit. Contains 2 each double Steel (Black Phosphorus finish, 3/8-16 ID x ¾-16 OD), Drill Bit, Tap and Install / Removal tool. This is used to repair the threads in the top plate if the hole has become very large. Additional inserts are available PN: 284-103847
Please Log in first to Rate the Product