I have the 2 14rd mags with metal base pads that came with the pcr and i purchased 2 of the 16rd mags also. i didn't care for the metal bases so i purchased 2 rubber base pads and really like those. I purchased the new 15rd compact mag (#11123) as a duel purpose mag and it gives a good 3 finger hold like the rubber bases. I purchased all my extra mags and such from Greg Cote LLC. Fast shipping and never a problem. As for the 16rd mags, i only use them to shoot out in my back yard, I do not carry them.