
Not to mention that it makes for an unreliable mounting point for the Quick Detach Single Point Sling Mount.

Also, this adhesive bond must be broken to disassemble the receiver for cleaning and maintenance or to install aftermarket internal upgrades, and then must be reapplied for reassembly. This glue bond between the receiver and “Castle Nut” is notorious for failing soon after you begin firing the rifle. The Sub 2000 Generation 2 comes from the factory with the “Castle Nut” glued to the receiver. On the Kel Tec Sub 2000 Generation 2, the nut that helps hold the receiver halves together and to the buttstock tube is sometimes referred to as the “Castle Nut”.
