Bear OPS Song IV Pink Raindrop Butterfly Knife (4.38" Satin Plain) B-400-AIPD-S

MSRP: $149.99
Our Price: $99.95
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Item #BHQ-21856 Online Only


  • Overall Length:9.75"
  • Blade Length:4.375"
  • Blade Material:14C28N
  • Hardness:58-60 RC
  • Blade Style:Clip Point
  • Blade Grind:Hollow
  • Finish:Satin
  • Edge Type:Plain
  • Handle Length:5.375"
  • Handle Material:Aluminum
  • Color:Pink
  • Weight:4.40 oz.
  • Knife Type:Butterfly
  • Brand:Bear Ops
  • Model:Bear Song IV
  • Model Number:B-400-AIBD-S 35019
  • Country of Origin:USA
  • Best Use:Recreation
  • Product Type:Knife


The Bear Song IV butterfly knife is the newest collaboration between BladeRunnerS (BRS) and Bear OPS. It is a lightweight flipper that is designed to be your go-to everyday carry knife. This B-400 model features pink anodized aluminum handles with raindrop graphic overlays, stainless steel spacers and a swappable latch. The pivots have 304 bearing surfaces and phosphorus bronze washers. The satin finished stainless steel clip point blade has a double tang pin design for great performance.


Customer Reviews

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Great Flipper (for a short time)
Braydon P.
I have had this bali for almost a year now, and it is still my main flipper(until i get enough money for something else). Now, once you flip it for long enough the screws will get loose. Another problem is the tang pins are getting squashed beyond repair, making the handles touch. All in all though, it is a good and smooth flipper.

Note: I did not buy this online.
Great knife
Zachary H.
I have had this knife for over a year around now, and I can say it has gone through hell and back and came out still stunning me to this day, would recommend the knife for anybody that wants their first butterfly knife! (was my first) Also one thing to note is to maintain all the parts that hold and stop the knife in place when flipping, eventually they will start getting a tad bit loose. A simple amount of care can fix that problem.