Notice of Proposed Rulemaking: Bump-Stock Type Devices
Summary

The Department of Justice (Department) proposes to amend the Bureau of Alcohol, Tobacco, Firearms, and Explosives regulations to clarify that “bump fire” stocks, slide-fire devices, and devices with certain similar characteristics (bump-stock-type devices) are “machineguns” as defined by the National Firearms Act of 1934 (NFA) and the Gun Control Act of 1968 (GCA), because such devices allow a shooter of a semiautomatic firearm to initiate a continuous firing cycle with a single pull of the trigger. Specifically, these devices convert an otherwise semiautomatic firearm into a machinegun by functioning as a self-acting or self-regulating mechanism that harnesses the recoil energy of the semiautomatic firearm in a manner that allows the trigger to reset and continue firing without additional physical manipulation of the trigger by the shooter. Hence, a semiautomatic firearm to which a bump-stock-type device is attached is able to produce automatic fire with a single pull of the trigger. With limited exceptions, primarily as to government agencies, the GCA makes it unlawful for any person to transfer or possess a machinegun unless it was lawfully possessed prior to the effective date of the statute. The bump-stock-type devices covered by this proposed rule were not in existence prior to the GCA’s effective date, and therefore would fall within the prohibition on machineguns if this Notice of Proposed Rulemaking (NPRM) is implemented. Consequently, current possessors of these devices would be required to surrender them, destroy them, or otherwise render them permanently inoperable upon the effective date of the final rule.

Direct link to comment form.

I submitted my comment a few minutes ago.

Docket number: 2017R-22

The NPRM falsely states: “Specifically, these devices convert an otherwise semiautomatic firearm into a machinegun by functioning as a self-acting or self-regulating mechanism that harnesses the recoil energy of the semiautomatic firearm in a manner that allows the trigger to reset and continue firing without additional physical manipulation of the trigger by the shooter. Hence, a semiautomatic firearm to which a bump-stock-type device is attached is able to produce automatic fire with a single pull of the trigger.”

That is factually incorrect, and inconsistent with objective physical reality. Firing still requires the trigger finger to engage and operate the trigger individually for each shot fired, after the firearm is MANUALLY pulled forward again with the shooter’s off hand.

Bump-fire stocks do not increase the “rate of fire.” The rate of fire from a “single trigger pull” is still 1. Each round discharged still requires an individual manual operation of the trigger IN THIS UNIVERSE. The firearm’s cyclic rate of fire is determined by the physics of the firearm’s internal parts: Mass, resistance, inertia, mechanical engagement, force of discharging cartridge. If anything, a bump-stock-type device would bleed recoil energy and cause a reduction in the theoretical maximum.

Bump-fire stocks do not “accelerate the firearm’s cyclic firing rate to mimic automatic fire.” Again, that rate is determined by the internal action of the firearm, not an external stock.

A bump-stock-type device merely aids the untrained shooter in achieving something closer to the firearm’s inherent theoretical rate of fire. (Again, since some recoil energy is bled off to assist in manual trigger operation, it probably prevents the shooter ever reaching the actual theoretical maximum.) Bump-fire stocks are training wheels.

The ATF previously ruled that the Akins Accelerator differed from modern bump-stock-type devices in that the spring in the stock acted as an active component to force the firearm into the ready-to-fire position trigger against the shooter’s finger, without additional action by the shooter. With a modern bump-stock-type device, the shooter must MANUALLY return the firearm to the ready-to-fire position, at which time the shooter MANUALLY operates the trigger again.

This is very easy to test, three ways, each using a bump-stock-type device:

1. Pull the trigger a single time and immediately move your finger forward off of the “ledge” (or “finger rest”). If the firearm continues to fire without further operation of the trigger, it is a machinegun. If it does not continue to fire, it is not a machinegun.

2. Should this not be clear enough, fire again; this time keeping your trigger finger off of the “ledge” so that your finger holds the trigger down, preventing it from resetting. If the firearm continues to fire without further operation of the trigger, it is a machinegun. If it does not continue to fire, it is not a machinegun.

3. If you are still unclear on the concept, pull the trigger, but keep the rifle pressed back in a conventional non-bump-fire mode (i.e.- don’t pull the rifle forward). If the firearm continues to fire without further operation of the trigger, it is a machinegun. If it does not continue to fire, it is not a machinegun.

If one cannot understand this, then that person is mentally incompetent and should be adjudicated as such under 18 U.S. Code § 922(d)(4), and should be removed from office.

If one will not understand this, then that person is guilty of malfeasance and should be removed.

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