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The Browning Buck Mark Contour 5.5 URX is a large-frame chambered in .22 LR. The  Browning Buck Mark is a line of .22 caliber pistols and what makes the Contour 5.5 URX different is its alloy receiver with a matte blued finish and a contoured barrel. The Contour URX also uses Browning’s patented Ultragrip RX, an ambidextrous contoured grip system that offers ergonomic grooves for fingers. This system is meant to increase grip consistency and overall accuracy.

Buck Mark pistols use a blowback action, meaning the rearward motion of the spent casing powers the mechanical reloading processes of the gun.

Common features for the Buck Mark line includes a 16 click per revolution adjustable Pro-Target brand sight instead of just 12 clicks. It's made from a lightweight machined aircraft grade aluminum alloy. And it has Browning's trademark gold trigger.