Sidelock:

http://www.gunsinternational.com/popup.c...4487621E020.jpg

One screw for the trigger plate.

Boxlock:

http://www.gunsinternational.com/popup.c...69CDDA3C897.jpg

One screw for the trigger plate. One screw for the bottom plate.

Position of triggers is another give away.

OWD


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