This is a small, easy to print, hand stop for your gun using the EasyRail system. It needs to be printed on 50% infill or higher for a sturdy final product. Print it as is with supports if needed. You will need strong bed adhesion, use a brim or raft if needed.
You can find the locking ridge at: https://www.printables.com/model/989530-easyrail
The author remixed this model.
Modified it to fit the EasyRail system