NERF MODULUS CHRONOBARREL: MSRP: $14.99
Range: NONE (but it does go to three digit FPS readings)
Attaches to Modulus barrel points, not usable with Nerf Rival ammo or Nerf Mega ammo (or 3rd party ammo that matches those dimensions - darts only.
Nerf Perks value: 0 (not listed as a product for points, yet.)
HOWEVER, it's not just a device that reads FPS. It also functions as an ammo counter, a feature long-used in mods and 3rd party accessories. Nerf now has their own plus a chronograph for $15, and the reliability is pretty neat. The shortcomings are simple; the device can only be used in stock form on Nerf Modulus blasters. A Nerf Rampage or Slingfire couldn't use it (which now makes the creation of the Scravenger a bit more obvious). Despite that, the device reads reliably, is reasonably low profile, and does what it's supposed to do. The red screen isn't the easiest to read like a blue digit on a black readout, but you make do when the price is right.
There doesn't (nor should there be) any range benefits to having the barrel on, just information for a player when they have to swap a magazine. Again it is a shame the device only works with darts, because it goes to three digit counts on the ammo side as well. It would be a bit handy for the Nemesis or Prometheus, too. For $15 one can't really be too picky though as there are already a number of bigger, more feature rich products. If you want those, they're out there. For cost-effective, quick solution, this is available as well, limits and all. Considering Nerf's penchant for dribbling out improvements or design tweaks in future builds, maybe a Rival and Mega sized dart counter is ready for the future, we just might not be ready for it yet. If you need a chrony and just can't afford a big kit, this is for you. If you want a quick ammo counter, this will also take care of you one way or another.