Bear OPS Bear-Song IV Silver Balisong Butterfly Knife - Black Plain

Retail Price: $145.00
Our Price: $92.99
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Item #BP-10472


  • Overall Length:9.75"
  • Blade Length:4.375"
  • Blade Material:Sandvik 14C28N
  • Hardness:58-60 RC
  • Blade Style:Spear Point
  • Blade Grind:Hollow
  • Finish:Black
  • Edge Type:Plain
  • Handle Length:5.375"
  • Handle Material:Aluminum
  • Color:Gray
  • Weight:4.48 oz.
  • Knife Type:Butterfly
  • Brand:Bear
  • Model:Bear Song IV
  • Model Number:B-400-B
  • Country of Origin:USA
  • Best Use:Recreation
  • Product Type:Knife


This Bear-Song IV collaboration between BladeRunnerS (BRS) and Bear OPS features natural finished aluminum handles with stainless steel spacers and a swappable latch. The pivots have 304 bearing surfaces and phosphorus bronze washers. The ti black finished 14C28N stainless steel clip point blade has a double tang pin design for great performance.


Customer Reviews

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A decent upgrade
Adam G.
I've been using cheap 30 dollar knifes for awhile now, and finally decided to upgrade to something worth a bit more salt - This knife isn't bad.. I feel A Kimura would've been a better choice, but it would probably be for aesthetic reasons as I don't quite care for how thick the handles are on this one. So far the only mechanical issue is that the pivot screw popped off after playing with it for awhile but that's no big deal. No problems with the tang pins yet.
One major problem
keenan r.
Great knife, only one problem. when I got the knife i played with it for a good hour and a half before I seen the tang-pin fly off while i was flipping it, if you plan to buy this knife be sure you have/plan to buy some loc-tite or thread lock gel so the tang pin stays tight. Other than that great knife, has good weight, flips nicely.
Can't stop messing with it.
Christopher C.
I love this blade so much, I cant put it down!! When it came, it was pretty stiff, but after some loctiting it was fine. Came pretty sharp. Latch is a little loose after a while. But its alright. Also, I was flipping and noticed my tangpin was missing. Although i found it and loctited it back into place. If you buy this knife, loctite the tang pin. No real complaints at all. Would definitely recommend. :)

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