Steel VSR Piston Sear

I give it a 4 because there are some compatibility issues that I am still trying to figure out, probably fixed with filing. The issue could arise from the trigger sear making it sit at a slight angle, I don't know but for me with the sear set it grabs the piston but doesn't let it go when pulling the trigger. Something somewhere is too tight and needs filing. Still, it's a very very fair price and there is no justification to asking $40 + shipping for sears I don't care what brand they are. I made the decision to use a VSR-10 as a base model over an APS2 L96 because of these sears sold here.