View Full Version : "Upgrading" Colt HBAR Sporter

11-28-2009, 10:25 AM
A friend of mine has a pre-ban Colt HBAR Sporter from the late 1980s that he wants to which he would like to add a collapsible stock, and a picatinny system. Are these rifle's considered "mil spec", and if I were to order parts for it online is there anything I would have to look out for? The only thing I can think of is a commercial sized buffer tube, but I don't think that's going to be an issue.