MAINSPRING SWIVEL Mfg: Smith & Wesson
Smith & Wesson Mainspring Swivel
$7.99
FITS: 31, .32; 32, .32; 34, .22; 36, .38; 37, .38; 38, .38; 42/442, .38; 49, .38; 60, .38, .357; 63, .22; 317, .22; 331TI, .32 Mag; 332TI, .32 Mag; 337TI, .38; 342TI, .38; 631/631 LS, .32 Mag; 632, .32 Mag; 637, .38; 638, .38; 640, .38; 640