Originally Posted by eldritch
They both come with M100 downgrade springs, though I'm not sure it would provide enough of an FPS drop in either guns case.
I'm getting a pretty good deal on these 2 as it is, and I don't have to pay/wait for shipping or meet some stranger somewhere and show them my ID
Then your choice is merely a case of personal preference at this stage. Make a decision and run with it. In both cases they are fairly good quality and will be acceptable. The m100 spring will lower the FPS to around 320-360 (depending)
If you intend on becoming a member of this community you will want to get AVed eventually.
Good luck with your choice.