We let Adam from Amtac Suppressors go over their product line of suppressors, including their over the barrel suppressors. We then spend some time shooting their awesome suppressors. Give them a look if you're looking for a suppressor.
Rex Silentium Fidelis
Ruger 2245 Suppressed
Rugged Suppressors Micro30! Modular Rifle Silencer
Griffin Armament Resistance 9 Silencer
Silencer VS Suppressor: What's the Difference?