THE SENTINEL IS A 9 SHOT REVOLVER WITH SWING-OUT CYLINDER, 6" BARREL, AND FIXED SIGHTS. THE R-101 MODEL DOES NOT HAVE WITHOUT RETURN SPRING ON EJECTOR. THIS REVOLVER HAS SOME WEAR, BUT IT'S FUNCTIONAL AND READY TO SHOOT. WE RESERVE THE RIGHT TO SELL THIS ITEM IN OUR STORE AT ANY TIME.