Surefire ep4 ear plugs will do the job if you're on a budget.
If you're serious about your hearing then get some Peltor xpi's, expensive but very effective. Try borrowing a pair from someone first and you'll know which way to go.
A&K LR300 long version.
Bought as a spare backup and I don't think I've actually used it in "anger"
Stock fps and gearbox.
No mags included (can add if you wish)
Also interested in swaps.