No. Section 922(r), in relevant part, makes it unlawful to assemble from imported parts a semiautomatic rifle that is otherwise not importable. The implementing regulations of the GCA at provides that a person may not assemble a semiautomatic rifle using more than 10 of the imported parts listed in the relevant paragraphs of the regulation. As discussed in section IV.B.8.e of the final rule, the criminal violation under section 922(r) is for the 鈥渁ssembly鈥 of the semiautomatic rifle; therefore, no modification of such firearm would cure the 922(r) violation because the 鈥渁ssembly鈥 has already occurred. Accordingly, a person with an imported pistol that was subsequently equipped with a 鈥stabilizing brace鈥 will have the same options as anyone else under the final rule. Should that person choose to register the firearm, no further modification of the firearm with domestic parts is required.
