Variants exist for compliance with various state gun laws, including a California-legal "featureless" variant with a Kydex grip-wrap barrier (prohibits gripping the back of the pistol grip), a hand stop replacing the usual vertical foregrip, and a permanently affixed Defiance DS150 stock to give an overall length of 36.5-inch (930 mm).
There are various versions of this firearm designed to meet the requirements of different state gun laws, including a California-compliant 'featureless' model with specific modifications, such as a Kydex grip-wrap barrier and a permanently attached Defiance DS150 stock, resulting in an overall length of 36.5 inches.