Ncstar Ar15 Castle Nut Crows Ft Tool

The NCStar AR15 Castle Nut Crows Foot Tool is a simple, purpose-built wrench for installing and removing castle nuts on AR15 and M4 telescoping stock tubes. If you build, maintain, or customize AR platforms, this tool makes the job faster and more reliable than improvising with pliers or screwdrivers — and it protects your castle nut and buffer tube from damage in the process.

Built from steel for durability, this crows foot wrench fits both 1/2" and 3/8" drive sockets, so it works with the ratchets and breaker bars already in your shop. Whether you're adjusting stock fit, swapping furniture, or doing a complete stock tube replacement, having the right tool means the job goes smoothly without stripped fasteners or marred finishes.

At just 6.7 oz, it's light enough to toss in a range bag or maintenance kit without thinking about it. A solid addition to any AR builder's toolkit or the bench of anyone who works on their own guns.

Key Features

• Compatible with both 1/2" and 3/8" drive sockets
• Steel construction for long-term durability
• Lightweight and portable for range bag or workbench
• Designed for AR15/M4 GI spec castle nuts on telescoping stock tubes

Specifications

Frequently Asked Questions

What sockets work with this crows foot?

This tool is compatible with both 1/2" and 3/8" drive sockets, so it works with most standard ratchets and breaker bars in your existing toolset.

Can I use this on any AR15 stock tube?

Yes, this crows foot is designed for AR15 and M4 telescoping stock tubes using GI spec castle nuts — the standard on most direct-impingement ARs.

Is this tool included with NCStar stock purchases?

No, this is a standalone tool. It is not included with stock kits or buffer tubes; you order it separately if you need a dedicated wrench for castle nut work.