No, just the tax will be gone. Now that that has happened there will be a legal challenge to the law which was based on the tax. No more tax, no basis for the law to exist.
In 2025, H.R.1 passed with $0 tax stamps for suppressors, SBRs, SBSs, and AOWs starting January 1, 2026. Full deregulation was blocked, but legal challenges may follow. See what this means for gun owners.