The Recruit was initially constructed with only three rivets, whereas most models have four. This characteristic is due to the fact that there are no backside tools, making the extra rivet not required. However, recently Victorinox have standardised on four rivets - even for no-back-tool models.
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Quote The Recruit was initially constructed with only three rivets, whereas most models have four. This characteristic is due to the fact that there are no backside tools, making the extra rivet not required. However, recently Victorinox have standardised on four rivets - even for no-back-tool models.https://www.sakwiki.com/tiki-index.php?page=Recruit