I just bought the whole deal and sold the bolt. They're $230 from Young directly but you can pick the same thing up (a Young NM bcg) from Spikes for $219, if that helps, plus you get the cool spider logo on it.
when i bought my last one from young a 6 months ago, there was none. i sent them money and out the door it went. spikes has them in stock also, as of yesterday. but, if you call directly, they may sell you a carrier minus the bolt, or have another option for you.