/TRADE 30rd mags for 20rd mags

[Spedman]

I have 3, 30 round magpul mags that id like to trade for 20rd mags. Im located in buford but i make my way around for work.
Thanks!

 

[boneboy96]

What caliber or doesn't it matter?

 

[Spedman]

boneboy96 its for a 300blk so 556 works fine.