6ARC magazines for Grendel

[v4lu3s]

Do the 7.62x39 magsa werk for grendel?

I cannot tell them apart from the 6.5 Grendel ASC ones except for the follower color. Ironically I just had a mishap at the range with 5 rounds loaded, 4 shots fired and the last did not feed. I assumed that the follower was stuck due to excess carbon from shooting suppressed all the time. Turned out the spring broke into 4 pieces, Primary Arms contacted me to replace it rather than waiting for ASC. I have NOT tried anything more than the 10 round mags though, but I am also currently using a Duramag 10 round 7.62x39 magazine that I bought from my range the day the other mag broke.