MJ Arsenal 4 Piece Grinder

The MJ Arsenal 4-Piece Grinder is a 2.2" (56mm) aluminum herb grinder with a screened kief chamber, built for a fine, consistent grind in a size that still fits a pocket.

Best for: a pocket-friendly grind with kief collection

Key Features

14-piece design — grinding, sifting, and kief collection each get their own chamber

2Aluminum construction resists wear far better than plastic grinders

32.2" (56mm) diameter — enough capacity for a session without the bulk

4Kief screen collects fine pollen below the grinding chamber

5Available in Purple, Green, Blue, or Black

Product Specifications

Why Choose This Grinder

A dedicated kief catcher is what separates this 4-piece grinder from a basic 2-piece design, and aluminum construction holds a sharp edge on the teeth through daily use far better than plastic. At 56mm, it hits the sweet spot between a full-size grinder and something small enough to travel with.

Ideal For

This grinder suits anyone who wants to collect kief as they grind, smokers who want a pocket-friendly size without sacrificing capacity, and MJ Arsenal fans looking to match their other gear.

Care & Maintenance

Brush out loose residue after each use. For a deep clean, disassemble and soak the metal parts in isopropyl alcohol for 20–30 minutes, rinse with warm water, and dry fully before reassembling.

Frequently Asked Questions

What does the 4-piece design add over a 2-piece grinder?
A separate kief catcher chamber with a screen, so fine kief collects below the main grinding chamber instead of mixing back into your herb.

What size is the MJ Arsenal 4-Piece Grinder?
2.2 inches (56mm) in diameter.

What colors are available?
Purple, Green, Blue, and Black.

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