Very hard to get hold of now, rare to even see them with a pistol, the one listed on here is the fiirst complete one I've seen for quite a while, not all the pistols were sold complete with these, I had a new old stock one a couple of years back in a polystyrene box there was no weights or space for them, the ones that came in the nice hard case were normally sold with weights as a full kit, you could try wonky Donky on here other than that city air weapons in Solihull has stock of older FWB spares but in all honesty there a bit like hens teeth now. With regards to actually needing them the 80 is already a very nicely balanced pistol and shoots superbly without them, not many fitted them when they were available which may explain why so few can be found now.