[HatfieldHog]

Hey, Gen 2 new Sub-2000, about 500 rounds through it. the Castle Nutt is loose. How do I secure it so that it doesn't loosen again?

Thanks for the input. At the range, the guys with AR's that have shot the Sub 2000, say it's the most fun gun to shoot at the range...!

See ya, HatfieldHog

 

[4ster]

According to Mcarbo Loctite 380 is what is recommended by Kel-Tec. I used it when I installed one of their trigger kits. I think the wrench Mcarbo makes is a lot easier to use than a strap wrench and worth picking up as well.

 

[KT9mm]

I have used the Mcarbo castle wrench for my S2K Gen 2 also. Works well and I would recommend it. I also used the Loctite 380 as recommended. All is still tight after ~150 rounds after application.

Edit - As mentioned in another thread, I have an Mcarbo QD Single Point Sling Mount attached to the Castle Nut. All is still tight and working well.