Selling mint FX Bluetooth Chronograph and a third party 3D-printed mount. The synthetic mount, with aluminum bar, allows the shooter to mount the chronograph and supporting bar to an FX PCP bottle. It allows the shooter to position the chrony below and just ahead of the muzzle. I had it mounted on an FX 480 CC bottle on my FX Impact Mk II. FX Chronograph is about 750 pellots/one year old. Download the FX Chrony App to your smartphone (in my case, iPhone), set the chrony up per numerous internet videos, and you are on your way to more consistent and accurate shooting by knowing the muzzle velocity of the pellet. $195 firm, shipped to any state east of the Mississippi River. No trades, please.