Kudos to NutsBrett and isnotayhoo for their work to bring this into being.

I made slight modifications;

1. added a support to the top of the FSB to hold the sight parallel to the block.
2. added a support for the bayonet lug to help prevent rolling of the FSB when driving the pins. This will not help if your lug is removed.
3. removed the "wings" from the ends as this prevents the handguard end cap from being able to be placed flush against bench block.
4. removed the "mirror" design and it now prints as one continuous piece.
5. taper pin holes slightly reduced in diameter/moved.

Creality

Ender-5 Plus

No

No

0.2mm

80%

Creality Slicer

Creality Ender-5 Plus

Filament PETG

Standard Quality 0.2mm
Wall Thickness 1.4mm
Wall Count 3
Horizontal Expansion -0.15 (to eliminate elephants foot)
Hole Horizontal Expansion 0.05
Infill Density 80%
Infill Pattern Gyroid
Print Temperature 235
Build Plate Temperature 80

SONIC Pad USED
Print Speed 180 mm/s
Cooling Fan Speed 25%
No Supports
Build Plate Adhesion Type Skirt (none needed)