It appears now that the incident that led to ban may not have been as bump stock intensive as first thought. While the guns were equipped with bump stocks they also appeared to be fully converted to fully auto fire. This is per sources within ATF and FBI:
ATF examination of guns used in Las Vegas mass killing
POSTED BY DAVID HARDY · 1 APRIL 2019 09:59 AM
Attorney Stephen Stamboulieh obtained the ATF report via the Freedom of Info Act. Here it is.
On p. 31, a significant statement. ATF saw no external signs that the guns had been converted to full auto. "However, on-scene ATF personnel were notallowed to physically examine the interior of the weapons for machine-gun fire-control components or known machinegun conversion devices such as Drop-In Auto Sears, Lightning Links, etc." The bolding is in the original, and suggests the agency was annoyed. Understandably, since determining if something was NFA is their field of expertise, and FBI (which had at best questionable jurisdiction -- what non-firearm federal crime could the killer have committed?) was keeping them from examining the evidence, and from the statement probably prevents them to this day.
UPDATE: David Codrea has even more. ATF experts reporting that they cannot confirm bumpstocks were actually used. The killer certainly had them, but may have used guns modified to fire full auto, and ATF could not determine which it was without examining them internally, which which FBI refused to allow.
ATF examination of guns used in Las Vegas mass killing
POSTED BY DAVID HARDY · 1 APRIL 2019 09:59 AM
Attorney Stephen Stamboulieh obtained the ATF report via the Freedom of Info Act. Here it is.
On p. 31, a significant statement. ATF saw no external signs that the guns had been converted to full auto. "However, on-scene ATF personnel were notallowed to physically examine the interior of the weapons for machine-gun fire-control components or known machinegun conversion devices such as Drop-In Auto Sears, Lightning Links, etc." The bolding is in the original, and suggests the agency was annoyed. Understandably, since determining if something was NFA is their field of expertise, and FBI (which had at best questionable jurisdiction -- what non-firearm federal crime could the killer have committed?) was keeping them from examining the evidence, and from the statement probably prevents them to this day.
UPDATE: David Codrea has even more. ATF experts reporting that they cannot confirm bumpstocks were actually used. The killer certainly had them, but may have used guns modified to fire full auto, and ATF could not determine which it was without examining them internally, which which FBI refused to allow.