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"American-Made Precision Gunsmithing Tools Since 1958"

Clymer Precision is a premier American manufacturer of high-quality chamber reamers, headspace gauges, and specialized gunsmithing tools.

Shop All Clymer Precision Products

229

Products

196

In Stock

1958

Founded

USA

Origin

All Clymer Precision Products (196)

Clymer 44 MAGNUM GO GAUGE HEADSPACE GAUGE STEEL

Clymer 40 S&W GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 38 SUPER HEADSPACE GAUGE STEEL

Clymer 38 SUPER GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 357 MAGNUM HEADSPACE GAUGE STEEL

Clymer 357 MAGNUM GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 25-20 WINCHESTER HEADSPACE GAUGE STEEL

Clymer NO GO 30 M1 CARBINE HEADSPACE GAUGE STEEL

Clymer 30 M1 CARBINE GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 9MM LUGER HEADSPACE GAUGE STEEL

Clymer 9MM LUGER GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 45-70 GOVERNMENT HEADSPACE GAUGE STEEL

Clymer 45-70 GOVERNMENT GO GAUGE HEADSPACE GAUGE STEEL

Clymer BELTED MAGNUM GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 30-06 SPRINGFIELD HEADSPACE GAUGE STEEL

Clymer 30-06 SPRINGFIELD GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 300 REMINGTON ULTRA MAGNUM HEADSPACE GAUGE STEEL

Clymer NO GO 30-40 KRAG HEADSPACE GAUGE STEEL

Clymer GO3040KRAG 30-40 Krag Steel Headspace Gauge

Clymer NO GO 30-30 WINCHESTER HEADSPACE GAUGE STEEL

Clymer 30-30 WINCHESTER GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 6.5X55MM SWEDE HEADSPACE GAUGE STEEL

Clymer 6.5X55MM SWEDE GO GAUGE HEADSPACE GAUGE STEEL

Clymer 284 WINCHESTER GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 7X57MM MAUSER HEADSPACE GAUGE STEEL

Clymer 7MM MAUSER GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 300 WSM HEADSPACE GAUGE STEEL

Clymer NO GO 308 WINCHESTER FAMILY HEADSPACE GAUGE STEEL

Clymer 308 WINCHESTER GO GAUGE HEADSPACE GAUGE STEEL

Clymer 250 SAVAGE GO GAUGE HEADSPACE GUAGE STEEL

Clymer NO GO 22-250 REMINGTON HEADSPACE GAUGE STEEL

Clymer 22-250 REMINGTON GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 223 REMINGTON HEADSPACE GAUGE STEEL

Clymer G0223REM 223 Remington Steel Headspace Gauge

Clymer 22 HORNET GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 22 WRF HEADSPACE GAUGE STEEL

Clymer 22 WRF GO GAUGE HEADSPACE GAUGE STEEL

Clymer 6MM BR GO GAUGE HEADSPACE GAUGE STEEL

Clymer NO GO 22 LONG RIFLE HEADSPACE GAUGE STEEL

Clymer 22 LONG RIFLE GO GAUGE HEADSPACE GAUGE STEEL

Clymer 7MM (0.275" PILOT) 1.5" THROATING REAMER

Clymer 6.5MM (0.255" PILOT) 1.5" THROATING REAMER

Clymer 6MM (0.236" PILOT) 1.5" THROATING REAMER

CLYMER 9MM (0.345" PILOT) 2" THROATING REAMER

Clymer 30 CALIBER (0.299" PILOT) 1.5" THROATING REAMER

Clymer 22 CALIBER CF (0.218" PILOT) 2.5 THROATING REAMER

Clymer 7.652X54R FINISHER CHAMBER REAMER

Clymer RIMMED FINISHER STYLE REAMER FITS .45 LONG COLT BARREL

About Clymer Precision

Clymer Precision is a highly respected name in the firearms industry, specializing in the manufacture of premium-grade gunsmithing tools. For decades, they have provided professional gunsmiths, custom rifle builders, and firearm manufacturers with exceptionally precise chamber reamers, headspace gauges, and crowning tools. Each tool is engineered and manufactured in the USA from premium materials, ensuring the tightest tolerances and cleanest cuts for a wide variety of calibers. Their extensive product catalog includes finishing reamers, roughing reamers, and headspace gauges designed to meet SAAMI and CIP standards. Whether you are chambering a new barrel or checking critical headspace for safety, Clymer's tools deliver the reliability and consistency required for high-performance shooting sports and custom firearm builds.

Headquarters

Rochester Hills, Michigan

Established

1958

Country of Origin

USA

History & Heritage

Founded in 1958, Clymer Precision has spent over six decades perfecting the art of precision machining for the firearms industry. Operating out of Rochester Hills, Michigan, the company has built a reputation for outstanding quality and customer service, utilizing advanced manufacturing technology to produce tools that consistently exceed industry expectations.