As the title says I'm after a Cyma, Jing Gong or S&T brand of Cyma Magazine. Mid cap or Hi cap doesn't matter. 

I've got a little bastard of a PP-19 Bizon pieced together out of boneyard Cyma body and G&G AK internals and it works a treat when forced to feed from AK mags but a Bizon isn't a Bizon without the big ugly, clunky tube mag. I just want to be able to rest at night knowing it feeds fine from a bizon mag without a hop unit change 😅
Ordered one as part of a bulk order from Tiger111hk but because a fire selector I bought in the same order is out of stock they're holding all of it until their restock "soon" whenever that is less I wanna go through the faff of partial refunds.

I believe the three are compatible with one another with decent results but feel free to correct me if I'm wrong. 

Not looking to pay stupid amounts. They were only about £19-25 new a couple of months back when I still had my S&T model. Too much more than that and I'd rather just wait out the "soon" on my order from Tiger111hk. 

Ta.