Wolff Browning High Power Extra Power Recoil Springs - B-9 18 1/2 Lb. Spring
$12.49
Extra power outputs for optimum functioning with hardball and hot handloads. Each spring comes with an extra power firing pin retraction spring to offset the increased slide thrust. Mfg: Wolff SPECS: 1935, 9mm's original spring averages 17 lb.