The US military experimented with Flechette rounds in the late 50's and the results were rather discouraging. While they produced wound tracks that were a nighmare in surgery they also produced wounds that were NOT immediately debilitating. So, someone shot with Flechette ammo could keep functioning at a high level for up to an hour or more. This appears to be nothing more than a modern take on that old flechette round and I rather doubt that the tested it by shooting pigs and observing how long it took for them to fall down as was done in hte 50's. Needless to say I'll pass, especially after seeing the reports about the cost.