When it comes to reloading AR-style rifles as well as other rifles, there's a new powder choice on the market-AR-Comp? from Alliant Powder. Alliant's new AR-Comp is the ideal powder for fast action, high volume AR shooters as well as those who enjoy shooting traditional rifles. Developed specifically for AR-style rifles and ideally suited for heavy 223 and 308 match bullets, AR-Comp delivers high performance ignition each and every time. Suitable for all semi-automatic and bolt-action rifles Ideal for heavy 223 and 308 match bullets Very consistent across temperature extremes