What ATF ruled
ATF concluded that the projectiles and projectile cores used to assemble SS109/M855 cartridges are primarily intended for sporting purposes and fall within the applicable exemption from the federal armor-piercing ammunition definition.
Why it matters
The ruling addresses the projectiles and cores themselves, not merely completed cartridges. Businesses that manufacture, import, sell, or document ammunition components should review the actual ruling before changing classification or recordkeeping procedures.
Primary source: ATF — Firearms Rulings (Ruling 2026-1) ↗
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