-Will swell (but only under extreme conditions)
-Not as nicely milled as more expensive bolts
What can I say about the Tigershark bolt from APM Products? Well for starters a lot. While this bolt certainly isn't the nicest looking, or milled to the highest quality it does however give you quite the bang for your buck.
Let start with the asking price. Depending on the marker you use, particularly Spyders, there are lots of makes to choose from. The price ranges from $15 to $17 US (With $3 US for air mail shipping) this bolt has most competitors sucking wind.
The quality of the materials used is of a high standard. However I found the milling to be on par with or slightly better than a stock bolt. Tigershark bolts don't have any fancy gimmicks like Venturi or Cupped faces, but they are certainly high flowing.
The Nylatron that the bolt is made of is very robust and very light weight. In comparison to a stock Spyder bolt, the Tigershark is nearly half the weight. What does that mean you ask? Well for starters with a spring kit you will get a bit more air (or CO2 efficiency). The weight of the the Tigershark and the open free flowing face makes it ideal for going LP.
Self lubricating. The Nylatron is composed of hard lubricants that don't require you to lubricate the bolt at all. The co-efficient of friction of this bolt is really low. Super low I would say.
Looks? Not so hot. But hey, at least it's a dark colour instead of fluorescent orange.
In conclusion, the Tigershark bolt is probably one of the best contenders for the Bolt of the Year award. Of all the competitors in it's price range, the only bolt that might compete with it is a Spudnuk'l. I highly recommend this bolt. I have bought three myself. If I could, I would rate this bolt a 9.8 out of 10.