30 Round Armalite AR-10 magazines???

[jtallen83]

Saw these on Gunbroker, first time I have run across this, not Armalite factory from what I can find;

https://www.gunbroker.com/item/771391280

[Sisco]

Doubt if they would fit the “B” models. The Gen 2 mags have a slot running the full length of the back of the magazines. These have a short slot at the top like M14 mags. I ordered some non Armalite mags from Schittier Than Dirt one time that were advertised as AR10 magazines and they turned out to not fit and looked similar to these but were 20 round. Almost thinking someone might have modified some M14 mags or something. Plus 30 rounders would make for a heavier than hell rifle.

[jtallen83]

I think my 25 are to heavy and awkward for most applications. I am curious what these fit, might very well be SR25 style and the seller just doesn’t know the proper nomenclature?

[Rsquared]

I've never heard of 30 rounders for an AR-10. But I don't claim to be an expert. I find 20 round mags to be just fine for these animals.