ONE NEW SPRINGFIELD ARMORY BARREL. WILL ONLY FIT GUNS DESIGNED FOR A RAMPED BARREL. BARREL MAY REQUIRE SOME MACHINING TO REACH DESIRED THICKNESS OR TO PROPERLY FIT IN THE GUN. THE BARREL AT ITS THICKEST POINT MEASURES .69" INCH DIAMETER BY MY MEASUREMENTS. THE THICKNESS OF THE METAL AT THE END OF THE BARREL MEASURES .18" THICKNESS BY MY MEASUREMENTS. THANKS FOR LOOKING. INCLUDES ONLY WHAT IS SHOWN.