C&R · III · 227
Smith & Wesson Improved 9mm Light Rifle prototype
Section III: removed from the NFA, curio or relic under the GCA
Official wording
ATF P 5300.11 · APRIL 2025 EDITION · SECTION III · VERBATIM · PDF P. 44 ↗
Smith & Wesson, Prototype “Improved 9mm Light Rifle Carbine”, caliber 9mm Luger, serial number X17, with factory-fitted 12 1/16-inch; manufactured in 1945.
What this entry requires
- ATF REQUIRESConfigured as the ATF wording states: “with factory-fitted 12 1/16-inch”
- ATF REQUIRESYour serial number is one ATF listsATF: “serial number X17”
- ATF REQUIRESMade 1945 (ATF’s dates)ATF: “manufactured in 1945”
Editorial facts · Our research
- Country
United StatesBasis: no citation - Manufacturer
- Smith & WessonBasis: the ATF wording
- Type
- RifleBasis: the ATF wording
- Action
- Semi-autoBasis: outside reference ¹
- Caliber
- 9mm ParabellumBasis: the ATF wording
- Made
- Listed serials only · c. 1945Basis: the ATF wording
- Service
- Military
Source
- Official wording
- ATF P 5300.11, April 2025 edition · Section III · PDF p. 44 ↗ · ATF original ↗
- Entries
- 2 lines
- Verbatim check
- Checked against the PDF text before every release
- Editorial facts
- Confidence: Medium · Last revised 18 October 2026 (Evidence pass) · How we rate confidence
- References
- 1. trenchart.us ↗, action: 1945 S&W 9mm prototype carbine, strictly semi-automatic, recoil-operated
- 2. trenchart.us ↗, service: prototype carbine submitted to the U.S. Army Ordnance Corps for testing
- Fact tags
- ATF the ATF wording states it.
- REF ¹ an outside reference supports it; the number points to the list of references.
- ESTIMATE an approximate or indirect reading, for example the production range of the base model.
- NO CITATION we haven’t attached a reference for this fact; it’s our editorial reading, not ATF’s.
- Source checked
- 20 October 2026: ATF’s page still lists the April 2025 edition
- Corrections
- None
Historical context
NO VERIFIED IMAGE AVAILABLEWe show only freely licensed images verified to depict this model. None has been found yet.