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The unique BladeExchange feature on these butterfly knives allow the user to effortlessly exchange a training blade for a live blade.

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play video Quartermaster QBS-2 Marty McFly BladeExchange Butterfly 4 inch D2 Satin Drop Point and Trainer Blades, Bead Blasted Titanium Handles
Quartermaster QBS-2 Marty McFly BladeExchange Butterfly 4" D2 Sat…
$278.00
$239.95
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play video Quartermaster QBS-2P Marty McFly BladeExchange Butterfly 4 inch D2 Satin Drop Point and Trainer Blades, Polished Titanium Handles
Quartermaster QBS-2P Marty McFly BladeExchange Butterfly 4" D2 Sa…
$278.00
$209.95
Save 24%
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