#html-body [data-pb-style=XQ5LN76]{justify-content:center;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}#html-body [data-pb-style=M6H0BS8],#html-body [data-pb-style=XQ5LN76]{border-style:none;border-width:1px;border-radius:0;margin:0;padding:0}When performance in close quarters matters most, SIG SAUER delivers. Our 120-grain Solid Copper .300 Blackout cartridge is purpose-built for short barrel rifles, maximizing terminal effect and reliability where every inch-and every shot-counts. Annealed Copper Tip- Advanced thermal treatment enhances expansion upon impact, delivering devastating terminal performance and consistent energy transfer. Optimized for SBRs- Tuned powder charge and projectile design ensure full powder burn and velocity efficiency in barrels as short as 7 inches. Barrier Blind Performance- Solid copper construction retains weight through glass, drywall, and light auto sheet metal, making it ideal for tactical and defensive use. Lead-Free Confidence- Meets environmental and training requirements without sacrificing performance.From the breach to the barrel's edge, this is the .300 BLK redefined. *Current image reflects previous black oxide cases, current cases are brass* ATTENTION: * You must be 18 or older to purchase rifle ammunition and 21 or older to purchase handgun ammunition.* For safety reasons, we do not accept returns of ammunition.* All ammunition will be shipped via ground delivery.* Adult signature required on delivery.* Please ensure you are purchasing and using the correct type of ammunition for your firearm.* Check the local laws of your area for any other laws or regulations before ordering.