Operating signal within 12 months from two or more independent sources.
What they make
Small Arms, Ordnance, and Ordnance Accessories Manufacturing332994Proof Research manufactures firearms barrels, rifles, and stocks using carbon fiber and steel. The company produces match-grade carbon fiber barrels made from 416R stainless steel blanks wrapped in aerospace-grade carbon fiber using a patented process, and offers complete rifle systems. The barrels are designed for accuracy, durability, and thermal performance in firearms applications.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Baiar Industries INC | Columbia Falls | Machine Shops 332710 | ACTIVE | 4.3 KM |
| Acutech Arms, LLC | Columbia Falls | Small Arms, Ordnance, and Ordnance Accessories Manufacturing 332994 | UNVERIFIED | 4.3 KM |
| Acutech Limited Liability CO | Columbia Falls | Machine Shops 332710 | ACTIVE | 4.3 KM |
| Defiance Machine INC | Columbia Falls | Small Arms, Ordnance, and Ordnance Accessories Manufacturing 332994 | LIKELY ACTIVE | 4.5 KM |
| Mono Machines LLC | Whitefish | Office Supplies (except Paper) Manufacturing 339940 | ACTIVE | 5.6 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 3 FEDERAL SOURCES, 8 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
EPA cross-references this facility in NPDES, OSHA-OIS, RCRAINFO · EPA site type STATIONARY.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| SAM GOV | OPERATING | SEP 2025 | SEP 2025 |
| EPA FRS | EXISTENCE | MAY 2015 | MAY 2015 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | EPA FRS | JUL 2026 |
| ADDRESS LINE1 | SAM GOV | SEP 2025 |
| CAGE CODE | SAM GOV | SEP 2025 |
| CITY | EPA FRS | JUL 2026 |
| CITY | SAM GOV | SEP 2025 |
| GEOM | EPA FRS | JUL 2026 |
| NAME | EPA FRS | JUL 2026 |
| NAME | SAM GOV | SEP 2025 |
| REGISTRATION EXPIRATION | SAM GOV | SEP 2025 |
| STATE | EPA FRS | JUL 2026 |
| STATE | SAM GOV | SEP 2025 |
| WEBSITE | SAM GOV | SEP 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.