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Sinclair International is a leading manufacturer of high-quality firearms accessories and tools. They specialize in products that enhance shooting accuracy and reloading efficiency.
Shop All SINCLAIR INTERNATIONAL ProductsAll SINCLAIR INTERNATIONAL Products (296)
Sinclair INTERNATIONAL BULLET COMPARATOR 7MM (0.284")
Sinclair INTERNATIONAL BULLET COMPARATOR 6.5MM (0.264")
Sinclair INTERNATIONAL BULLET COMPARATOR 338 CALIBER (0.338")
Sinclair INTERNATIONAL DIGITAL INDICATOR
Sinclair INTERNATIONAL AR-15 CARRIER KEY BRUSH
Sinclair INTERNATIONAL DIGITAL INDICATOR W/ LEVER AND FLAT POINT
Sinclair INTERNATIONAL DELUXE SHOOTING REST FOREND STOP
Sinclair INTERNATIONAL DELUXE SHOOTING REST THREADED HANDWHEEL 1-14"
Sinclair INTERNATIONAL DELUXE SHOOTING REST THREADED POST 1-14"
Sinclair INTERNATIONAL TIN COATED TURNING MANDREL 338 CALIBER (0.336")
Sinclair INTERNATIONAL TIN COATED TURNING MANDREL 8MM (0.321")
Sinclair International 30 Cal Tin Coated Turning Mandrel
Sinclair INTERNATIONAL TIN COATED TURNING MANDREL 7MM (0.282")
Sinclair INTERNATIONAL TIN COATED TURNING MANDREL 270 CALIBER (0.275")
Sinclair INTERNATIONAL TIN COATED TURNING MANDREL 6.5MM (0.262")
Sinclair INTERNATIONAL TIN COATED TURNING MANDREL 25 CALIBER (0.255")
Sinclair International 22 Cal Tin Coated Turning Mandrel
Sinclair INTERNATIONAL TIN COATED TURNING MANDREL 20 CALIBER (0.202")
Sinclair INTERNATIONAL TIN COATED TURNING MANDREL 17 CALIBER (0.170")
Sinclair INTERNATIONAL TIN COATED EXPANDER MANDREL 338 CALIBER (0.337")
Sinclair INTERNATIONAL TIN COATED EXPANDER MANDREL 8MM (0.322")
Sinclair International 7mm Tin Coated Expander Mandrel
Sinclair INTERNATIONAL TIN COATED EXPANDER MANDREL 270 CALIBER (0.276")
Sinclair International 6.5mm Tin Coated Expander Mandrel
Sinclair INTERNATIONAL TIN COATED EXPANDER MANDREL 25 CALIBER (0.256")
Sinclair INTERNATIONAL TIN COATED EXPANDER MANDREL 6MM (0.242")
Sinclair INTERNATIONAL TIN COATED EXPANDER MANDREL 20 CALIBER (0.203")
Sinclair INTERNATIONAL TIN COATED EXPANDER MANDREL 17 CALIBER (0.171")
Sinclair INTERNATIONAL 22-250 REMINGTON BULLET SEATING DIE
Sinclair INTERNATIONAL MICRO-ADJUST BULLET SEATING DIE 6.5X284 WINCHESTER (NORMA)
Sinclair INTERNATIONAL MICRO-ADJUST BULLET SEATING DIE 260 REMINGTON
Sinclair INTERNATIONAL MICRO-ADJUST BULLET SEATING DIE 243 WINCHESTER
Sinclair INTERNATIONAL MICRO-ADJUST BULLET SEATING DIE 338 LAPUA
Sinclair INTERNATIONAL MICRO-ADJUST BULLET SEATING DIE 300 WINCHESTER MAGNUM
Sinclair INTERNATIONAL MICRO-ADJUST BULLET SEATING DIE 6.5X47MM LAPUA
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 338 CALIBER (.337")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 8MM (.322")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 30 CALIBER (.307")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 7MM (.283")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 270 CALIBER (.276")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 6.5MM (.263")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 25 CALIBER (.256")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 6MM (.242")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 22 CALIBER (.223")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 20 CALIBER (.203")
Sinclair INTERNATIONAL CARBIDE EXPANDER MANDREL 17 CALIBER (.171")
Sinclair INTERNATIONAL SCOPE RING LAPPING TOOL 34MM
Sinclair INTERNATIONAL PICATINNY QD BIPOD ADAPTER
About SINCLAIR INTERNATIONAL
Founded in 1975, Sinclair International has established itself as a trusted name in the firearms industry, providing innovative solutions for shooters and reloaders. Based in the USA, the company focuses on delivering precision tools and accessories that meet the needs of both amateur and professional marksmen.
Sinclair International offers a wide range of products designed to improve shooting performance and reloading processes. Their commitment to quality and precision is evident in every item they produce.
Product Lines
- Reloading Tools
- Shooting Accessories
- Measurement Instruments
- Cleaning Supplies
Headquarters
Established
1975
Country of Origin
USA
Official Website
Customer Service
Warranty
Sinclair International offers a limited warranty on their products, typically covering defects in materials and workmanship for a period of one year from the date of purchase.
History & Heritage
Sinclair International was founded in 1975 and has since become a prominent manufacturer in the firearms accessories market. The company is known for its dedication to quality and innovation, providing tools that enhance shooting accuracy and reloading efficiency.
Notable Products
Sinclair INTERNATIONAL DIE LOCK RING PLIERS FOR REDDING
Sinclair INTERNATIONAL SHOOTING REST LIGHTWEIGHT HANDWHEEL STAINLESS STEEL
Sinclair INTERNATIONAL DIGITAL INDICATOR W/ LEVER AND FLAT POINT
Sinclair INTERNATIONAL NECK TURNING HANDLE STANDARD 17-338 CALIBER
Sinclair INTERNATIONAL SHARKFIN CLAMP ATTACHMENT
Why Choose SINCLAIR INTERNATIONAL?
Buyers choose Sinclair International for their commitment to quality and precision in firearms accessories. Their innovative products are designed to enhance shooting performance and ensure reliability in every use.
Hot SINCLAIR INTERNATIONAL Items June 2026
Trending right now based on the last 30 days of TheGunDock orders + page views.
Sinclair INTERNATIONAL NECK TURNING MANDREL SS 17 CALIBER (.
Sinclair INTERNATIONAL BRASS CASE BRITE MEDIA TREATED WALNUT
Sinclair International Bump Gage Insert for AVV_25-06 Reming
Sinclair INTERNATIONAL PILOT STOP STAINLESS STEEL 9.3MM
Sinclair 608060400558 45 Cal 8-32M Bronze Brushes 12-Pack
Sinclair INTERNATIONAL BENCHREST HEAVY VARMINT AMBIDEXTROUS
Sinclair INTERNATIONAL CARBIDE NECK TURNING MANDREL 20 CALIB
Sinclair INTERNATIONAL TIN COATED EXPANDER MANDREL 8MM (0.32
Shop SINCLAIR INTERNATIONAL Products
Sinclair INTERNATIONAL DIAL INDICATOR .001
Sinclair INTERNATIONAL DIE LOCK RING PLIERS FOR REDDING
Sinclair INTERNATIONAL SHOOTING REST LIGHTWEIGHT HANDWHEEL S
Sinclair INTERNATIONAL DIGITAL INDICATOR W/ LEVER AND FLAT P
Sinclair INTERNATIONAL NECK TURNING HANDLE STANDARD 17-338 C
Sinclair INTERNATIONAL VLD (VERY LOW DRAG) CHAMFERING TOOL
Sinclair INTERNATIONAL SHARKFIN CLAMP ATTACHMENT
Sinclair INTERNATIONAL CASE MOUTH DEBURRING TOOL WITH HOLDER
Sinclair INTERNATIONAL BIPOD ADAPTER DELUXE RAIL
Sinclair 1" Montana Sling 1INBROWN Brown Leather Rifle Strap
Sinclair INTERNATIONAL FLASH HOLE DEBURRING TOOL WITH HANDLE
Sinclair International 125INCHBLACK Montana Sling 1-1/4" Bla
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