(MCT) — WASHINGTON — Legislation to regulate online purchases of ammunition and high-capacity magazines is bringing new attention to a growing cyberspace ammo market that’s operated with little government oversight.

Under federal law, firearms dealers must obtain federal licenses and keep records of their weapons transactions, but there’s virtually no federal regulation of ammunition suppliers or sales — though there was before 1986. Adults who want to stockpile large amounts of ammo can buy it from dozens of websites that specialize in bulk sales, often at low prices. Some sites hawk magazines that fire up to 100 rounds without reloading, which critics argue have been tied to deadly mass shootings and should be outlawed.