I have to say when I first got this endplate castlenut combo I was a little sceptical it would hold up and be secured to my gun. But after seeing how it installs I can see now that you really don't need to stake your endplate. It's got a super long set screw that goes the whole width of the unit, takes a long time to screw in too. Put a drop of blue loctite on it to make sure it stayed put. I love the 3 QD mounts that it comes with too its a nice touch to not have to buy any. It's a homerun for me, I have 2 installed already and plan on getting a third once it comes in stock.