That's a nice option to have there, the Quattro gun's triggers are a P.I.T.A. when you are trying to tear the guns down. I use a broken piece of chopstick to hold that one pin hole (let's call it the PITA pinhole) through the sere in place and it's still not easy! But you still have the S.A.S. and the better and more durable of the two stocks. I think the durability of the S.A.S. stocks over the older version has something to do with the way the front lug nuts are designed in the stock...