These selections only available on the Springfield Hellcat. 
 
We only offer removing the factroy rear dovetail with the optic cut on the Springfield Hellcat.
 
We do not offer tall sights for the Springfield Hellcat.
 
I can not modify the optic ready Hellcat model to accept the RMRcc. 
 
If you have the original Vortex  Defender, slect the Shield RMSc cut and put in the notes section at checkout that you have the original Defender. The Defender ST will not fit on the Hellcat.