Unless you have a dealer close enough to drive to, you'll probably have to order. I know there are some online retailers that offer Knights at decent prices, but not sure who has what at this point and what type of prices you might have to pay.
I'd probably go to Knight direct - then you could get the bare primer ignition when you order and I think they ship for free. Most every store would have them with the full plastic jacket ignition I would guess, which means you have to order the nfpj setup from knight which is about $40 iirc.
Maybe someone else can chime in with options. I like the green stock