Not sure if this is a duplicate, but just in case:
Colorado legislator Michael Merrifield (D, Mordornitou) has introduced a law that would make it a felony to possess not only a bump stock, but anything that "increases the rate of fire of a semi-automatic rifle." Note that the law establishes no baseline, so it would conceivably apply to anything from a bump fire stock to a two stage target trigger for High Power, to a tube of grease.
Given that this law uses the same "increases the rate of fire" language as seen in several other proposed state laws, I can only assume that Merrifield has taken model legislation from Bloomberg's group (along with a campaign contribution.)
The law is available here:
http://leg.colorado.gov/bills/sb18-051
Link to a PDF of the bill here:
http://leg.colorado.gov/sites/default/files/documents/2018A/bills/2018a_051_01.pdf
Bill Summary(Note: This summary applies to this bill as introduced and doesnot reflect any amendments that may be subsequently adopted. If this billpasses third reading in the house of introduction, a bill summary that applies to the reengrossed version of this bill will be available at http://leg.colorado.gov.)Under current law, possession of a dangerous weapon is a class 5 felony for a first offense and a class 4 felony for each subsequent offense.The bill amends the definition of "dangerous weapon" to include a"multi-burst trigger activator", which the bill defines as:!A device that attaches to a semiautomatic firearm and allows the firearm to discharge 2 or more shots in a burst when the device is activated; or A manual or power-driven trigger-activating device that, when attached to a semiautomatic firearm, increases the rate of fire of that firearm.
The bill also provides that a person who sells a multi-burst trigger activator to another person, or who purchases a multi-burst trigger activator from another person, commits a class 5 felony; except that each subsequent violation by the same person is a class 4 felony.
Be it enacted by the General Assembly of the State of Colorado:
1
SECTION 1.
In Colorado Revised Statutes, 18-12-101, add
2 (1)(g.5) as follows:
3 18-12-101. Definitions - peace officer affirmative defense.
4 (1) As used in this article 12, unless the context otherwise requires:
5 (g.5) "MULTI-BURST TRIGGER ACTIVATOR" MEANS:
6 (I) A DEVICE THAT ATTACHES TO A SEMIAUTOMATIC FIREARM AND
7 ALLOWS THE FIREARM TO DISCHARGE TWO OR MORE SHOTS IN A BURST
8 WHEN THE DEVICE IS ACTIVATED; OR
9 (II) A MANUAL OR POWER - DRIVEN TRIGGER - ACTIVATING DEVICE
10 THAT, WHEN ATTACHED TO A SEMIAUTOMATIC FIREARM, INCREASES THE
11 RATE OF FIRE OF THAT FIREARM.
12
SECTION 2.
In Colorado Revised Statutes, 18-12-102, amend
13 (1) as follows:
14 18-12-102. Possessing a dangerous or illegal weapon -
15 affirmative defense - definitions.
(1) As used in this section, the term
16 "dangerous weapon" means a firearm silencer, machine gun, short
17 shotgun, short rifle, or ballistic knife, OR MULTI-BURST TRIGGER
18 ACTIVATOR.
19 SECTION 3.
In Colorado Revised Statutes, add 18-12-113 as 20 SB18-051 -2-