This is an M-LOK Barricade Handstop I designed as I like the look and design of it.

Uses two M-LOK bolts and nuts. I made them big enough so any bolt should fit through. Holds on extremely well.

Mainly printed for looks over functionality, since I assume the PLA pikes would flatten very easily. Try something stronger like ABS or CF Nylon for a more functional print.

I used 0.12 resolution to make the pikes more fine and sharper.
4 walls 100% infill for best strength.

Print as shown in stl file and use supports on build plate only.