7.62x39 mags for 6arc?

[dwdantzler]

This video is the first I've seen someone running a c products 7.62x39 mag in a 6arc. He mentions this specifically at about 2:00. Anybody else try that?

[VASCAR2]

CPD/Duramag list their 6.5 Grendel mags as 6.5 Grendel/6 MM ARC. Alexander Arms say their E-Lander mags are optimized for the6.5 Grendel and were not reliable with 6 MM ARC. There are mixed results on whether 7.62x39 mags work reliably with the 6.5 Grendel. There are mixed reports of 6.8 SPC mags working with the 6.5 Grendel. In my opinion there is no consensus on either x39 or 6.8 being reliable in every 6.5 Grendel
AR-15.

I think I’d try CPD/Duramag 20 round 6.5 Grendel first then some ten round 6.5 Grendel mags.

[alwie]

CPD/Duramag list their 6.5 Grendel mags as 6.5 Grendel/6 MM ARC.  Alexander Arms say their E-Lander mags are optimized for the6.5 Grendel and were not reliable with 6 MM ARC.  There are mixed results on whether 7.62x39 mags work reliably with the 6.5 Grendel.  There are mixed reports of 6.8 SPC  mags working with the 6.5 Grendel.  In my opinion there is no consensus on either x39 or 6.8 being reliable in every 6.5 Grendel
AR-15.

I think I’d try CPD/Duramag 20 round 6.5 Grendel first then some ten round 6.5 Grendel mags.

I have CPD 20 round mag in 7.62 x 39mm and 6.5 grendel/6 ARC mags. They seem to be exactly the same …. except for the followers. I now run both 7.62x39 AR and 6mm ARC AR with the 6.5 Grendel/6 ARC Durmags. Both rifles run great.