M Cups

The M Cup has the same backbore (GR #2 Backbore) as the MS Cup.  

The M Cup has a slightly lower alpha angle, more volume and more depth than the MS Cup, although, the playing characteristics are similar.  

The alpha angle is slightly lower and this is an option when more lip room is needed.  

Works very well in a variety of playing situations from commercial to concert work.  An ideal all around mouthpiece with a compact core, vibrant feel, and full of overtones.

This is the most popular GR Cup.