While it is true that the gain is ordinary it will not show up on Page 1 of the 1065 nor the 1120S return.  If an asset on which section 179 was taken is sold, the gain does not automatically transfer to form 4797 or the front page of the tax return.  Hence it also does not flow to the K1.  This is because the 179 taken may or nay not have been allowed at the shareholder level.

A 179 disposition report prints along with the K1 to show shareholders or partners the selling price and 179 deduction taken and which year.  this is info for them to enter on their personal returns.  If you do the taxes for all owners and know that 179 was allowed to them in full, I suppose you could manually enter sale on 4797 so it flows to K1.