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ADCO Firearms LLC operates out of Portage, Ohio as both a barrel manufacturer and full-service gunsmith shop. Founded on the principle of selling only products that have proven themselves as performers, ADCO builds relationships with industry experts to ensure quality across the board—whether you're sourcing parts for a PSD build overseas, law enforcement duty weapon, or competitive/recreational s...
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Full description and what we offer
ADCO Firearms LLC operates out of Portage, Ohio as both a barrel manufacturer and full-service gunsmith shop. Founded on the principle of selling only products that have proven themselves as performers, ADCO builds relationships with industry experts to ensure quality across the board—whether you're sourcing parts for a PSD build overseas, law enforcement duty weapon, or competitive/recreational shooting.
The core business is manufacturing AR barrels in multiple calibers and configurations:
Barrel Lengths & Specs: - 5.56mm: 7.5", 10.3", 11.5", 12.5", 14.5", 16", 18", 20" - 300 Blackout: 10.3" pistol (1:8 twist) - 9mm barrels - Multiple profiles: Gov Contour, LPGB, FSB, M4, Mid-length - Pricing from $310–$389 depending on configuration
Gunsmithing Services: - Barrel threading (5.56, 9mm, 300BLK, and other calibers) - Barrel modification and repair - Contouring and custom finishes - AR15 lower receiver mods (AWB compliance, semi-auto conversions) - AR57 full-auto bolt mods - FSB install and modification - Gas block pinning - NFA engraving for suppressors and short-barreled rifles - Permanent muzzle device attachment - Muzzle device removal - Assembly and disassembly services - Testing and evaluation work
"We thread more than just AR barrels." ADCO's threading service extends to pistol calibers, larger bore sizes, and specialty applications. This is a differentiator—most shops stick to standard AR work.
ADCO stocks over 20 major manufacturers:
| Category | Brands | Price Range |
|---|---|---|
| Optics/Sights | EoTech, Holosun, Geissele, Trijicon, Magpul BUIS | $38–$665 |
| Weapon Lights | SureFire, Streamlight | $41–$379 |
| Suppressors | Dead Air, SilencerCo, Rugged, Griffin Armament, HUXWRX | Call for pricing |
| Silencer Mounts | ASR, Bravo, Alpha, AEM, 3-lug adapters | $30–$119 |
| Upper/Lower Parts | Bolt carrier groups, charging handles, triggers, stocks | $38–$212 |
| Tactical Gear | B5 Systems, Blue Force Gear, Magpul, Daniel Defense | Varies |
[email protected] - Direct contact for special requests, custom work, and transfers.
Physical Address: 108 Findlay Pike, Unit C Portage, OH 43451 Phone: 419-882-8079
Retail Hours: - Tuesday, Thursday, Friday: 10am–6pm - Wednesday, Saturday: 10am–2pm - Sunday & Monday: Closed
This isn't a retail-first operation. ADCO exists because Steve saw what works in the field—PSD work, law enforcement duty, and competitive shooting—and built a shop around those real-world demands. You get someone who understands why barrel quality matters, why thread runout matters, and why NFA engraving needs to be done right. The gunsmithing menu is extensive enough to handle serious builds, and the parts selection reflects actual shooter needs, not just fill-in-the-catalog thinking.