| MEM&r Engineering Company Dba D&b Plastics | Orange | CA | — | ◇ UNVERIFIED |
| MLMtm LLC | San Jose | CA | — | ◇ UNVERIFIED |
| MRMueller Refrigeration Products Company | Hartsville | TN | — | ◇ UNVERIFIED |
 Multix Precision Manufacturing Inc | Monrovia | IN | — | ◇ UNVERIFIED |
| MAMurdoch and Co LLC | Milford | PA | — | ◇ UNVERIFIED |
| MIMxr Imaging | Vacaville | CA | — | ◇ UNVERIFIED |
| NTNammo Talley - Plant 1 | Mesa | AZ | — | ◇ UNVERIFIED |
| NMNaroh Manufacturing, LLC | Rockledge | FL | — | ◇ UNVERIFIED |
| NMNational Military Armament LLC (natmil) | Van Buren | AR | — | ◇ UNVERIFIED |
| NINc Industries | Temecula | CA | — | ◇ UNVERIFIED |
| NENeco Engineering INC | Blaine | MN | — | ◇ UNVERIFIED |
| NINemco INC. | Feasterville Trevose | PA | — | ◇ UNVERIFIED |
| NINeometal INC | Oakdale | CA | — | ◇ UNVERIFIED |
| NCNevada Cartridge Company LLC | Henderson | NV | — | ◇ UNVERIFIED |
| NTNew Technology Precision Machining Co., INC. | Jupiter | FL | — | ◇ UNVERIFIED |
| NUNew Ultra Light Arms, LLC | Granville | WV | — | ◇ UNVERIFIED |
 New Vision Industries INC. | Endicott | NY | — | ◇ UNVERIFIED |
| NWNew Wave Surgical | Pompano Beach | FL | — | ◇ UNVERIFIED |
| NLNext Level Armament, LLC | Jenison | MI | — | ◇ UNVERIFIED |
| NSNielsen Specialty Ammo Inc | La Verne | CA | — | ◇ UNVERIFIED |
| NSNielsen Specialty Ammo Inc | La Verne | CA | — | ◇ UNVERIFIED |
| NDNitinol Devices and Components | Fremont | CA | — | ◇ UNVERIFIED |
| NINoll Incorporated | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| NPNonesuch Precision Services | Scarborough | ME | — | ◇ UNVERIFIED |
| NPNorma Precision INC | Garden City | GA | — | ◇ UNVERIFIED |
| NSNorthern Screw Machine Company INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| NSNorthern Swiss Products LLC | West Branch | MI | — | ◇ UNVERIFIED |
| NSNorthwest Swiss-matic, LLC | Crystal | MN | — | ◇ UNVERIFIED |
| NDNovak Designs, INC. | Parkersburg | WV | — | ◇ UNVERIFIED |
| NINovaks INC | Parkersburg | WV | — | ◇ UNVERIFIED |
| NMNp Manufacturing Group LLC | New Paris | OH | — | ◇ UNVERIFIED |
| NCNsk Corporation | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| OCOlin Corporation Winchester Ammunition Division | Oxford | MS | — | ◇ UNVERIFIED |
| OCOlin Corporation, Winchester Division | Wood River | IL | — | ◇ UNVERIFIED |
| OBOlson Brothers CO | Plainville | CT | — | ◇ UNVERIFIED |
| OLOminous, LLC | Nampa | ID | — | ◇ UNVERIFIED |
| OCOne Concepts LLC Dba Precision One Ammunition | Mount Pleasant | SC | — | ◇ UNVERIFIED |
| OAOperators American Tactical Hardware, LLC | Rockledge | FL | — | ◇ UNVERIFIED |
| OTOptics Technology, INC. | Pittsford | NY | — | ◇ UNVERIFIED |
| OPOrange Park Machine, INC. | Orange Park | FL | — | ◇ UNVERIFIED |
| OSOrin Screws Products | Van Nuys | CA | — | ◇ UNVERIFIED |
| OMOsteon Medical | Irvine | CA | — | ◇ UNVERIFIED |
| OTOtis Technology INC | Lyons Falls | NY | — | ◇ UNVERIFIED |
| OEOutdoor Entity Group | Palm Desert | CA | — | ◇ UNVERIFIED |
| OAOutlaw Arsenal, LLC | Pearland | TX | — | ◇ UNVERIFIED |
| OIOxford Instruments Service LLC | Vacaville | CA | — | ◇ UNVERIFIED |
| PPP2 Precision Mfg LLC | Pierceton | IN | — | ◇ UNVERIFIED |
| PAPACC Armor, LLC | Saint Augustine | FL | — | ◇ UNVERIFIED |
| PBPac-nor Barreling INC | Brookings | OR | — | ◇ UNVERIFIED |
| PSPalmetto State Armory- Dunbar | West Columbia | SC | — | ◇ UNVERIFIED |
