The KAK Industry Castle Nut Multi-Tool (brand part no. KAK Castle Nut Multi Tool) is a compact wrench built by KAK Industry, a company founded in 2011 by Kurt Kosman specifically to fill a gap in the firearms market for quality, American-made components at affordable, sustainable prices. This tool is sized for castle nut and buffer tube work on AR-platform rifles, giving builders a dedicated, purpose-built option instead of improvising with adjustable wrenches or pliers that can mar the finish.

Key Specifications

• Built as a dedicated wrench tool for AR-platform castle nut and buffer tube installation.
• Finished in black for a clean, durable look.
• Manufactured by KAK Industry, a company focused on American-made firearm components.

Frequently Asked Questions

What is this tool used for? Installing and tightening castle nuts and buffer tubes on AR-platform rifles.

Who makes it? KAK Industry, founded in 2011 to supply quality American-made firearm components.

From KAK Industry, this tool pairs with the rest of our gunsmithing tools and supplies.

Buy the KAK Industry Castle Nut Multi-Tool

Stop marring your buffer tube with the wrong tool. Order the KAK Industry Castle Nut Multi-Tool from our Lubbock, Texas gun shop for fast, insured shipping as soon as it’s ready to ship.