Unless the outer tube is replaced by the manufacturer prior to its removal from the manufacturing premises for purposes of sale or distribution (see “If a silencer is found to be defective due to the manufacturing process, may it be replaced?”), the replacement of the outer tube amounts to the making of a new silencer. For the registered owner to fabricate a new outer tube, he or she must submit an ATF Form 1 (5320.1), Application to Make and Register a Firearm, pay the making tax of $200, and receive ATF approval. The application to make should indicate that the new tube is being fabricated for use in replacing a damaged outer tube on a registered silencer, and the application should indicate the make, model and serial number of the registered silencer. It would be helpful for the applicant to include a copy of the approved registration for the silencer. Assembly of the newly fabricated tube with the other parts of the registered silencer does not require an additional application to make nor payment of another making tax, as the one Form 1 will provide permission to fabricate the new tube and to assemble it with the old silencer parts. The replacement tube must be marked in accordance with 27 C.F.R. § 479.102. The registrant may use the same serial number that appeared on the damaged tube.
If the registered owner wishes to acquire a replacement tube from a person other than a qualified manufacturer, the replacement tube must be registered as a new silencer by the other person and transferred to the registered owner in accordance with the NFA and GCA. The other person must submit an ATF Form 1, pay the $200 making tax, and receive ATF approval to make the replacement tube. The replacement tube must be marked in accordance with 27 C.F.R. §§ 478.92 and 479.102. The other person would then transfer the replacement tube to the owner of the damaged silencer, subject to the transfer tax, in accordance with the NFA and GCA. The new tube may be then be assembled with the other parts. The original damaged silencer should be reported to the NFA Branch as destroyed.
Alternatively, a qualified manufacturer may replace the tube, report the manufacture on ATF Form 2 (5320.2), Notice of Firearms Manufactured or Imported, and transfer the replacement tube to the owner in accordance with the NFA and GCA. The transfer must comply with the $200 transfer tax and all other provisions of the NFA, as it would be a new silencer. The replacement tube must also be marked in accordance with 27 C.F.R. §§ 478.92 and 479.102. The required markings include an individual serial number and the name, city, and State of the manufacturer who replaced the tube. The replacement tube may not be marked with the name, city, and State of the original manufacturer of the silencer, as this would be a false marking. Although the new tube is a new silencer for purposes of the NFA, it would be a replacement firearm of the same type as the original silencer, and it may be returned directly to the registrant in interstate commerce in accordance with 18 U.S.C. § 922(a)(2). The original damaged silencer should be reported to the NFA Branch as destroyed.