Print them flat on their rears, as pictured, supporting the openings and the ledge for the flashlight mount. All shells/perimeters printed, highly advised. Will require three M4 nuts, and M4x30 cap head bolts. Flashlight mounts with its stock hardware.
Standard ‘co-witness’ height. Actual zero is somewhat unverified, but will vary depending on hop up, BB velocity and distance between the front and rear sight anyhow. Front sight can be mirrored to place on the other side of the rail.
PLA+ is recommended to withstand abuse.
The author marked this model as their own original creation.