5 rounf is not logical - Duramag 6.5 Grendel Stainless Steel 5 Round Rifle Magazine

I got both 10 and 5 round magaxzines and am returning the 5 round mags.
They are exactly the same except you can only feed rive rounds in a complete look-alike, There is absolutely no difference in the empty mags, nothing stamped to say 5 or qo round. Wow, hard to keepclear what you are holding after you get them out of the wrapper. I thought a 5 round would of been a smaller package and an advantage for handiness, traqvel low profile when shooting prone et al. 5 round is a no-go if it is a 10 tound mag size.