That's a very good deal, IMHO.
If they are in working condition, use them.
If not, the regs and especially the barrels are good. It says Proto on the side but it's basically an ultralite with different style tip and slightly less porting.
Simple leaks should be easy to fix, o-ring kits are available for reasonable money, but if the noid or board has gone bad it's probably not cost effective to fix. The spring detents last forever unless they rust -- just open and clean them.
The grip should have a standard dovetail if you're looking to upgrade to on/off (NOT Eclipse T-rail).