M16 magazine trade; what do you see as fair/even?

[CoRoMo]

Should be simple enough and it's just a whimsical question anyway. If you were one party in a trade, the trade being a swap of 20rd mags and 30rd mags...

To prune out the unnecessary variables, lets say all the mags are brand new Pmags. This way we aren't trying to determine how many used C-Product mags are worth how many new Pmags.

So two shooters come to the table; one with NIB 20rd Pmags and the other with NIB 30rd Pmags, each wanting a few of the other. You are one of these traders.

Is it as simple as round count (four 30s = six 20s)?

Or is the 30 rounder the king and is worth two or three 20s?

Or is a complete magazine (follower, spring, floor plate, and all) worth more than the number of rounds it holds? I'd rather have four mags than to have three, but is four 20s equal to three 30s? Five 20s = four 30s?

Or is a magazine equal to a magazine and round count is not really a factor.

 

[psyopspec]

From one I've seen from browsing gunbroker the last few days, the premium on the 30 round magazines is very slight, and in some auctions doesn't even show at all relative to 20 round magazines. "But Gunbroker?!," some may say, "That place is ridiculous!" I would answer that if one wants to check on the status of a premium for an item, there's no better place to do it than the free market, even if that market happens to be overpriced.

 

[OARNGESI]

personally i would prefer the 20rd mags over the 30rd ones