I have 3 C Product Defense (CPD) 20 round 6.5 Grendel mags that I bought some time ago (don't remember when or from whom - can't find receipts 
might have been last January). I think they're stainless steel but their bodies are magnetic. They will hold 20 rounds but that last round is a tight squeeze. I believe the bodies are nitrited. They're definitely not painted like my Stoner 6.5 mags. They look a little different than the current CPD 20 rounders. On my mags the middle guide rib is wider & deeper for about the first 2 inches or so. I've had no issues with these mags. All 3 feed & function well.
VASCAR2... I can't see the followers in your photos. Is the hump on the left or right side? Mine are on the left... looking from the back of the mag. Also, do your mags have part or serial numbers stamped on them? I can see some stampings on the 20 rounders that I can't quite make out. Mine have what looks like laser engraving: CPD 6.5 Grendel (Painted over).
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might have been last January). I think they're stainless steel but their bodies are magnetic. They will hold 20 rounds but that last round is a tight squeeze. I believe the bodies are nitrited. They're definitely not painted like my Stoner 6.5 mags. They look a little different than the current CPD 20 rounders. On my mags the middle guide rib is wider & deeper for about the first 2 inches or so. I've had no issues with these mags. All 3 feed & function well. VASCAR2... I can't see the followers in your photos. Is the hump on the left or right side? Mine are on the left... looking from the back of the mag. Also, do your mags have part or serial numbers stamped on them? I can see some stampings on the 20 rounders that I can't quite make out. Mine have what looks like laser engraving: CPD 6.5 Grendel (Painted over).
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