Noveske 8.5" .300 Blackout Stainless Barrel

The Noveske 8.5" .300 Blackout stainless barrel is the definitive choice for shooters who prioritize accuracy above all else in their .300BLK build. Manufactured from 416R stainless steel — the same material used in precision rifle competition barrels — and hand-lapped to ensure a mirror-smooth bore surface, this barrel extracts every last fraction of MOA from the .300 Blackout cartridge.

Stainless steel barrels offer inherently better accuracy potential than chrome-moly alternatives because the material machines more uniformly, resulting in tighter bore and groove dimensional tolerances. The hand-lapping process further refines the bore surface, reducing copper fouling and producing more consistent bullet engraving. The trade-off is durability: stainless barrels will show throat erosion faster than chrome-lined alternatives, particularly in high round count suppressed applications. For most .300BLK shooters who aren't putting tens of thousands of rounds downrange, the accuracy advantage far outweighs the durability concern.

Noveske's reputation in the precision AR market is well-earned. Their quality control is meticulous, and each barrel is individually inspected to ensure it meets their accuracy standards. The 1:7 twist rate handles the full range of .300BLK projectile weights, and the pistol-length gas system is properly tuned for the 8.5" barrel length. If you're building a .300 Blackout platform where accuracy is the primary objective — whether for precision subsonic work, hunting, or match shooting — this is the barrel to build around.