50 Cal Machine Gun Bullet Cartridge Pen Kit (Parker Refill)

Turn a piece of military history into a writing instrument with the 50 Cal Machine Gun Bullet Cartridge Pen Kit. Built around an authentic once-fired .50 caliber brass cartridge, this kit transforms genuine military brass into a bold, conversation-starting ballpoint pen. Perfect for outdoorsmen, veterans, military enthusiasts, and anyone who appreciates a pen with a story behind it.

What sets this kit apart is the cartridge itself — a real .50 BMG case first developed for the Browning machine gun in the late 1910s and still in use today. The brass is authentic, not decorative, and the pen is tuned so the turned section length is adjustable between 1⅛" and 2", letting you dial in the exact look and balance you want. A Parker-style ballpoint refill is included so it's ready to write right out of the box.

Features

• Authentic military brass: Built from a genuine once-fired .50 caliber cartridge casing — the same round used in Browning heavy machine guns since WWI

• Parker-style refill included: Comes ready to write with a Parker-compatible ballpoint cartridge — no separate purchase needed

• Adjustable turned section: The wood section can be turned to any length between 1⅛" and 2" for a custom grip feel and appearance

• Compact finished size: Overall pen length ranges from 5½" to 6⅜" depending on your turned section — substantial and comfortable in hand

• Outstanding gift appeal: The military heritage and unique construction make this a standout gift for veterans, hunters, and history buffs

• Pairs beautifully with exotic woods: Dark, dense blanks like walnut, ebony, and cocobolo complement the brass cartridge body; lighter woods create a striking contrast

• Short blank required: Uses a compact ¾" × ¾" × 2" blank — great for using up premium offcuts and scraps

Tooling Requirements

• Drill Bit: 8mm

• Bushings: Bushings — 50 Cal Ballpoint Pen Kit

Mix & Match:

Combine the 50 Cal Machine Gun Bullet Cartridge Pen Kit with any other single pen kits to unlock the highest discount levels!

Kit Includes

• Pen components (blank not included)

• Authentic once-fired .50 caliber brass cartridge body

• Brass tube

• Parker-style ballpoint refill (included)

Specifications

• Style: Ballpoint

• Design Detail: Authentic once-fired .50 BMG military brass cartridge body

• Blank Size: ¾" × ¾" × 2"

• Drill Size: 8mm

• Turned Section: 1⅛"–2" (adjustable)

• Finished Length: 5½"–6⅜" (varies with turned section)

• Refill Type: Parker-style ballpoint (included)

Why Turners Love This Kit

• The authentic .50 caliber brass cartridge is a built-in conversation piece — every person who picks it up asks about it

• The compact 2" blank requirement is ideal for using premium scraps and offcuts that would otherwise go to waste

• The adjustable turned section lets you put your own stamp on the finished pen — no two need to look exactly alike

• Makes an exceptional personalized gift for veterans, active military, hunters, and collectors