3FTech Picatinny Handstop: FFFTech/FFFTechnology
...It's a handstop that mounts to picatinny rails...
Were you expecting some deep lore?
Printer Used: Ender 3 V2
Filament Used: PLA+
First Layer Print Height: .20mm
Standard Layer Height: .12mm
Wall Thickness: .40mm
Wall Perimeters: 4+
Infill Pattern: Gyroid
Material Flow: 100%
Support Material Percentage: 18%
Print the handstop upside-down.
1x M4x30mm Bolt (Can be ground down to 28mm so it doesn't stick out the side)
1x M4 Hex Nut