Airsoft Atlanta posted on their Facebook two illustrations that show an upcoming Universal Speedloader Adaptor that can be used with the speedloaders such as the Odin M12 Sidewinder... "Coming out soon - the universal speedloader adaptor for midcap airsoft magazines. Compatible with official Odin speedloaders, Maxx, and other Odin style midcap loaders. An innovative adaptor device that mounts into the M4 loader slot allowing use with ALL airsoft midcap magazines.

Now you can have a Gas or HPA Power in the same airsoft gun, thanks to CQB Russian Airsoft. He made an HPA Adapter for airsoft gas magazines which you can quickly install in 20 seconds according to him. All you need to do is remove the gas valve then install the adapter. Attach a hose then hook up the HPA tank and you're good to go. If you want to go back to GBB, just put back the gas valve in again.