Contains the Following Screw:<br> 1) USR2812 Action slide lock pivot<br>
1) USR3612 Adjusting sleeve lock screw<br>
1) USR6112 Barrel chamber ring screw (pre 64)<br>
1) USR6112A Barrel chamber ring retainer (post 64)<br>
1) USR13112 Guard screw<br>
2) USR14912 Magazine band bushing screw<br>
2) USR16112 Magazine plug screw<br>
1) USR10712 Carrier pivot (LH threads)<br>
1) USR12512 Firing pin retractor screw<br> 