I finally got finished my research and video evaluating Glock's maritime spring cups. Among my research for this, I interviewed three different people at Glock, the top aftermarket producer of maritime spring cups, and a well-known, highly regarded gunsmith who modifies standard spring cups for use in his competition Glock triggers. I cover the most common reasons that shooters install maritime spring cups, and just for fun, I even tested two different rounds on Sim-Test when shot from one to seven feet underwater. I was pretty surprised by the results. Let me know what you think. [ame="http://www.youtube.com/watch?v=COea9JqJ7SM"]http://www.youtube.com/watch?v=COea9JqJ7SM[/ame] Wanna kill these ads? We can help!