This is a email I had sent but I guess he's busy.

CCClinton

I noticed you had something close to this as part of the SL-9 complete kit on the website which of course always stays sold out. My question is will this complete upper setup work with a SL-9 lower. As soon as reinforced package with every comes back in stock I'm going to build a SL-9/Super Safe setup. Just wanted to be 100% positive this upper will work... correct bcg etc.

https://kakindustry.com/upper-receiver-9mm-8-inch-barrel-7-2-inch-mlok-handguard/

Thanks and keep up the awesome work

hoffmantactical

Yes! The KAK bolt is the one I based my design around. We also use these handguards on our uppers.

CCClinton

hoffmantactical thanks chief. I appreciate the advice. Looking forward to another Hoffman Tactical Super Slayer for my collection.

CCClinton

hoffmantactical II meant to ask you earlier... are there any issues with this upper working with the Super Safety?

hoffmantactical

AR-9 bolts require the core mass to be ground to prevent interference with the lever.