C Products Defense Inc DURAMAG Steel 308 Win, 7.62x51mm NATO, 6.5 Creedmoor AR-10 5rd Black Detachable - 308 Winchester/7.62 NATO Caliber, Aftermarket Origin

Mag is heavy and durable, and works well in my AR

good fit and so far functioning well in my Ruger.

These would be good magazines except for one problem. The 5-round and the 10-round are EXACTLY the same on the outside. They're the same size, the same markings, everything the same. In some bizarro world where you have to defend yourself with only 10-round or less magazines, you won't want these magazines because you'll think you grabbed 10 rounds but only have 5. I'm a fan of C-Products; and I almost always buy there 20-round magazines. The one magazine I bought batch that wasn't C-Products, branded for the big Internet seller who I bought it from, was very poor and I've gone back to just C-Products. I'll have to rethink my 5 and 10-round buys. I bought one of each just to decide if I wanted to buy more. At this point, I have to keep looking.