This trigger uses mil-spec (small) pins which are typically a .154" diameter.
As of my 01/25/2021 delivery, this trigger RA434 came with factory anti walk trigger pins. I unfortunately ordered a separate set as the current description for this product makes no mention of the included pins. It mentions KNS brand pins are recommended. Optics planet should update this for future customers. This will be going in a colt milspec lower. A previous purchased Rise Rave trigger works great in a Ruger AR configuration.