Precision-engineered at the pioneering PolyCase® Ammunition development lab, Umarex ARX ammo incorporates patent-pending innovation that enables extreme hunting performance.

Constructed from an advanced polymer-copper matrix, the Umarex ARX SpeedBand™ and SpeedBelt™ bullets will revolutionize terminal performance in both muzzleloading and airgun hunting.

PolyCase ARX technology acts as a force multiplier in muzzleloader and airgun ammunition, simultaneously dispersing kinetic energy both forward and laterally. ARX non-expanding ammo provides maximum hydraulic displacement and terminal energy transfer to targets.

This high velocity, flat-shooting projectile provides exceptional performance in mid and big-bore air rifles when combined with Umarex SpeedBand or SpeedBelt polymer sabots.
 
Umarex ARX Ammunition elevates pre-charged pneumatic air rifle performance into the 21st century with four of the most popular air rifle chamberings.

The groundbreaking Umarex SpeedBand sabot was developed for use with Umarex ARX bullets in .357, .40 and .45 caliber while the base-style SpeedBelt sabot was designed for use with .50 caliber Umarex ARX ammo and performs flawlessly in both muzzleloaders and the new Umarex Hammer™.50 caliber big bore air rifle.
 
The polymer formulation of Umarex SpeedBand and SpeedBelt sabots creates a powerful seal in barrel lands and grooves, blocking the passage of air to swiftly drive the projectile down the barrel. Upon exiting the muzzle, captive air pressure on the sabot forces release of the high velocity, light-weight ARX ammo, which maximizes momentum and delivers un-paralleled terminal performance on target.