I have sampled a few different CASM mounts for the M14/M1A.
For my Blackfeather "RS" build, I chose the Gen II EX
It's rock solid, and it provides extra rail space front & rear.
Click to enlarge image

The mount sits in the rear sight pocket, and it has a rear peep.
For my Blackfeather "RS" build, I chose the Gen II EX
It's rock solid, and it provides extra rail space front & rear.
Click to enlarge image
The mount sits in the rear sight pocket, and it has a rear peep.
