The proposed regs, submitted 12/30/2016, can be viewed here.
DOJ claims an exemption as a result of specific language in the recently enacted “assault weapon” law regarding the registration process. As enacted, the law requires DOJ to create regulations providing gun owners with the information necessary on how to properly register their bullet-button firearms with DOJ as an “assault weapon.” The law exempts such registration related regulations from the typical rulemaking process, but significantly, only to the extent necessary for the actual registration process.