Used 7 of these magazines, 6 from this pack and 1 came with a CQR I purchased. I used them all in my KM4 RIS, not the CQR and they were amazing! I only load 100 rounds in 120 midcaps (whether they're KWA, Magpul, MAG or any other) and I would suggest that to anyone to avoid feeding issues.
Now that I have these magazines I won't be using any others, these magazines are simply flawless.
Fit in my mag pouches better than standard M4 mags
They don't come with GPS devices if you lose one on the field. I lost one. I want it back.
Rating: [5 of 5 Stars!]