C:F:TE:CSL 7540 [December 23, 1983] Dear Mr: [] This refers to your letter of December 6, 1983, enclosed with a firearm submitted for an examination to determine if this full automatic weapon, incorporating an integral silencer, can be transferred with the payment of only one transfer tax. An examination of the submitted sample reveals that it is an altered Heckler and Koch (H&K) Model 94 firearm incorporating an integral silencer or muffling device. The alterations to the H&K Model 94 firearm all take place in the trigger group with no modification to the actual receiver of the firearm. The muffling device, or silencer, is permanently attached to the receiver of the firearm. Such a device, when so affixed to the receiver of the H&K Model 94 as the submitted sample, would be subject to only the one $200 transfer tax. The model designation of 94S is suitable, however, the [ ] abbreviation used to identify your firm may be used only if your Federal license reflects these initials. Further, since the trigger group alone is a combination of parts designed, and intended to convert a weapon into a machinegun, and subject to the purview of the National Firearms Act, we would suggest that the firm name, model designation, and serial number also be marked on it. We are returning the submitted sample to you at the above address, under separate cover. We trust that the foregoing has been responsive to your needs. If we can be of any further assistance, please do not hesitate to contact us. Sincerely yours, Edward M. Owen, Jr. Chief, Firearms Technology Branch