BOSTON (AP) — Lawmakers on Beacon Hill face a deadline to approve a spending bill that could also make Massachusetts the first state to ban “bump stocks” since a deadly shooting in Las Vegas.

The $82 million deficiency budget is needed by Tuesday so the state comptroller can close the books on the 2017 fiscal year, which ended on June 30.

A House-Senate conference committee was appointed Friday to resolve differences between the chambers.

Attached to both the House and Senate versions are proposals to ban bump stocks, a device that investigators say was used by the gunman who killed 58 people at a music festival.

The House bill would outlaw any device intended to increase the rate of discharge by a firearm. The narrower Senate measure applies specifically to trigger cranks and bump stocks.

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