mag coupler for P-mags gen 1

All my p-mags are gen1 . They are in perfect condition and 7 of them even have the transparent window . I have been looking for a mag coupler but the Maglink works only on the newer p-mags . I checked on the Dream Plastics Pmag coupler but doesn`t say if it would work on older Pmags . The difference I believe is that the older P-mags have 5 ribs and the newer ones have 4 … Does anyone knows if that coupler works on older P-mags Gen 1 made on or before 2009 ? or let me know which does … thanks

mag couplers suck

Concise, and to the point, summing up the matter.

Well I just saved some money. Thanks!

Well, I never tried them but I had some concern about the weight that will add to the rifle , so … I guess that this idea of mine was not a brilliant one … thanks for clear it so well