custom lock inlets Our kits and machining process do not allow for the deletion of the lock inlet. Topics: Products_KitsTags: Southern|Manufacturing|Inletting|Ordering|LockLast verified: 2026-08-16Also called: southern mountain rifle, southern mountain, mountain rifle, southern, smr, manufacturing, cnc, cnc machining, machining, milling, how it is made, inletting, inlet, inlets, inletted, ordering, order, place an order, order entry, how do i order, lock, lockplate, lock plate, lockplate assembly