| 摘要 |
In a barrel of a semi-automatic pistol, the barrel having fore and aft barrel locking grooves for locking into corresponding fore and aft slide assembly wall segments formed in a slide mounted on a receiver of the pistol when the barrel is in its lock-up position, the improvement comprising adjustment means for precision-fitting the barrel to the dimensions and tolerances of the slide and the receiver of the pistol. The barrel includes a pair of raised contact pads integrally-formed in laterally-spaced relation in the aft locking groove of the barrel to provide an initial vertical interference fit between the aft locking groove of the barrel and the aft locking wall segment of the slide. The contact pads are adapted for incremental trial-and-error removal until a just-sufficient amount material from one or both of the contact pads has been removed to cause the barrel to move into the proper lock-up position with lock-up pressure transferred onto the top of a slide stop pin on which the barrel is pivotally mounted with the barrel locking grooves intimately engaged with the aft locking wall segment of the slide assembly.
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