Yep that's how it works, parts turn into rifles. I started with a Spikes 16" middy and a spare chrome bolt when AIM had them. The bolt has now grown into a 14.5" middy upper & I'm saving up for another complete enhanced lower from Spikes. I am also starting a fund for a .308 AR. I guess I'll need to sell my car or rent the wife out to afford this hobby.