Good evening to you!! I'm gonna say the 300 blackout. See the below link for more information. Hope this helps. Have a good rest of your day.
budsgunshop.com/product_info.php/products_id/174764/diamondback+db15+.300+blackout+semi+auto+rifle

LQQK here: budsgunshop.com/search.php/q/ar-10+.308

Jason, good catch. I was just looking at the less expensive model, didn't realize it was a bolt action. Semi-auto is definitely better for home defense. It was under AR style rifles, just assumed it was semi-auto without looking at the listing.

Hi Cody and welcome. .308 AR10: budsgunshop.com/product_info.php/products_id/712026131/am+am10+battle+308+win+16+magpul --------------- An excellent self/home defense load: budsgunshop.com/product_info.php/products_id/50676/hornady+critical+defense+ftx+308+winchester+ammo+20+round+box ------------------ And this is an excellent all-around hunting load: budsgunshop.com/product_info.php/products_id/15749/federal+fusion+soft+point+308+winchester+ammo+165+gr+20+round+box ---------- Cheers, stay safe and enjoy!

Ill agree with Ed, but I'm not keen on a Bolt action for Home Defense. Here's quite the assortment to choose from in AR-10 .308 semi-auto rifles.
budsgunshop.com/search.php/q/ar-10+.308

Hi Cody, .308 caliber would fit both bills budsgunshop.com/product_info.php/products_id/49183/mossberg+%26+sons+mvp+lc+bolt+7.62+nato+.308+win+nato+18.5+10+1+magpul+ctr+alumi ,
Stay safe & have a great day!