Fiocchi Hyperformance SBR Enhanced .300 AAC Blackout 220-grain boat-tail ammunition (part no. 300BKSBS) is engineered by Fiocchi specifically to perform well out of short-barreled rifles, the platform 300 Blackout was designed around. This is standard ammunition, not a regulated firearm — the SBR Enhanced designation simply means the load is tuned to run efficiently and deliver consistent velocity out of the shorter barrel lengths common on AR pistols and short-barreled rifles. At 220 grains, this is a heavy-for-caliber bullet in the range favored by shooters running 300 Blackout closer to subsonic speeds, where a shorter barrel doesn’t cost as much velocity as it would with a lighter, faster bullet. It’s a strong pick for a suppressed or short-barrel-focused 300 Blackout build.

Key Specifications

• Chambered in 300 AAC Blackout, a cartridge purpose-built for short-barreled rifles and AR pistols.
• Runs through standard AR-15 magazines and bolts with only a barrel change from 5.56.
• Loaded with a heavy 220-grain boat-tail bullet, well suited to subsonic-range velocities.
• Engineered as SBR Enhanced, tuned specifically for consistent performance out of short barrels.
• Well suited to suppressed or subsonic-focused 300 Blackout builds thanks to its heavier bullet weight.
• Uses a boat-tail bullet base for a more efficient, consistent flight profile.
• Brass-cased for reliable extraction and reloading.
• Packaged 20 rounds to a box.

Frequently Asked Questions

What does SBR Enhanced mean? It means Fiocchi tuned the load to perform consistently out of short-barreled rifles and AR pistols, not that the ammunition itself is a regulated item.

Why use a heavier 220-grain bullet in 300 Blackout? Heavier bullets hold velocity better out of a short barrel and are well suited to subsonic-range use.

Buy the Fiocchi Hyperformance SBR Enhanced Ammo

A short-barreled 300 Blackout build deserves a load tuned specifically for it, and this Hyperformance round delivers exactly that. Add it to your ammunition lineup today. Order from our Lubbock, Texas gun shop and it ships fast to your door.