Bear OPS Bear-Song IV Butterfly Knife

  BladeRunnerS and Bear OPS are the brains behind this butterfly. The Bear-Song IV is a lightweight butterfly, making it an attractive option for an EDC. In fact, this butterfly weighs 4.4 oz.—only .3 oz. more than the typical Benchmade 42 Balisong, which is the standard many people measure other butterflies against. The Bear-Song IV … Continue reading