50 Cal Machine Gun Cartridge Bottle Opener/Pen Kit (Cross Refill)
SKU: DK-PK50CALBS
50 Cal Machine Gun Cartridge Bottle Opener/Pen Kit
Turn genuine military brass into something you can write with — and open a cold one with. The 50 Cal Machine Gun Cartridge Bottle Opener/Pen Kit is built around an authentic once-fired .50 caliber brass cartridge, the same round first developed for the Browning heavy machine gun in the late 1910s. The result is an impressively large, one-of-a-kind ballpoint pen that also functions as a bottle opener — a combination that makes it the most conversation-starting pen kit in the shop.
What truly sets this kit apart is the bottle opener functionality built right into the design. This isn't a pen with a gimmick — it's a genuinely useful dual-purpose tool built from real military hardware. The turned wood section is fully adjustable from 1⅛" to 2" in length, letting you dial in the look and balance, and the finished pen runs from 5½" to 6⅜" overall — substantial and commanding in hand.
Features
Authentic .50 caliber brass body: Built from a genuine once-fired cartridge casing — the same round that's been used in military Browning machine guns since WWI
Integrated bottle opener: Fully functional bottle opener built into the design — a genuinely useful dual-purpose tool, not just a novelty
Adjustable turned section: Turn the wood section anywhere from 1⅛" to 2" — every finished piece looks a little different and can be tuned to the turner's preference
Large, impressive finished size: Overall length of 5½" to 6⅜" depending on turned section — this is a substantial pen that commands immediate attention
Cross-style refill included: Comes ready to write with a Cross-compatible ballpoint refill; widely available replacements make it easy to keep writing
Compact blank requirement: Only needs a ¾" × ¾" × 2" blank — great for using up premium offcuts and short-grain exotics
Outstanding gift appeal: Military-themed, dual-function, and made from real brass — a standout gift for outdoorsmen, veterans, hunters, and collectors
Instructions
Tooling Requirements
Drill Bit: 7mm
Bushings: Bushings — 50 Cal Ballpoint Pen Kit (#PK50CALBU)
Mix & Match:
Combine the 50 Cal Bottle Opener Pen Kit with any other single pen kits to unlock the highest discount levels!
Kit Includes
Pen components with bottle opener (blank not included)
Authentic once-fired .50 caliber brass cartridge body
Brass tube
Cross-style ballpoint refill (included)
Specifications
Style: Ballpoint with integrated bottle opener
Design Detail: Authentic once-fired .50 BMG military brass cartridge body; functional bottle opener
Blank Size: ¾" × ¾" × 2"
Drill Size: 7mm
Turned Section: 1⅛"–2" (adjustable)
Finished Length: 5½"–6⅜" (varies with turned section)
Refill Type: Cross-style ballpoint (included)
Why Turners Love This Kit
It's the only pen kit that also opens a beer — and that's exactly the story you tell at the craft fair right before someone buys it
The real .50 caliber brass cartridge is a built-in conversation piece — every person who picks it up asks about it, and the bottle opener seals the deal
The short 2" blank requirement makes this a great use for premium scrap offcuts — small piece, huge finished impact
An exceptional gift for outdoorsmen, veterans, hunters, and anyone who appreciates a tool with genuine military provenance
50 Cal Machine Gun Cartridge Bottle Opener/Pen Kit
Turn genuine military brass into something you can write with — and open a cold one with. The 50 Cal Machine Gun Cartridge Bottle Opener/Pen Kit is built around an authentic once-fired .50 caliber brass cartridge, the same round first developed for the Browning heavy machine gun in the late 1910s. The result is an impressively large, one-of-a-kind ballpoint pen that also functions as a bottle opener — a combination that makes it the most conversation-starting pen kit in the shop.
What truly sets this kit apart is the bottle opener functionality built right into the design. This isn't a pen with a gimmick — it's a genuinely useful dual-purpose tool built from real military hardware. The turned wood section is fully adjustable from 1⅛" to 2" in length, letting you dial in the look and balance, and the finished pen runs from 5½" to 6⅜" overall — substantial and commanding in hand.
Features
Authentic .50 caliber brass body: Built from a genuine once-fired cartridge casing — the same round that's been used in military Browning machine guns since WWI
Integrated bottle opener: Fully functional bottle opener built into the design — a genuinely useful dual-purpose tool, not just a novelty
Adjustable turned section: Turn the wood section anywhere from 1⅛" to 2" — every finished piece looks a little different and can be tuned to the turner's preference
Large, impressive finished size: Overall length of 5½" to 6⅜" depending on turned section — this is a substantial pen that commands immediate attention
Cross-style refill included: Comes ready to write with a Cross-compatible ballpoint refill; widely available replacements make it easy to keep writing
Compact blank requirement: Only needs a ¾" × ¾" × 2" blank — great for using up premium offcuts and short-grain exotics
Outstanding gift appeal: Military-themed, dual-function, and made from real brass — a standout gift for outdoorsmen, veterans, hunters, and collectors
Instructions
Tooling Requirements
Drill Bit: 7mm
Bushings: Bushings — 50 Cal Ballpoint Pen Kit (#PK50CALBU)
Mix & Match:
Combine the 50 Cal Bottle Opener Pen Kit with any other single pen kits to unlock the highest discount levels!
Kit Includes
Pen components with bottle opener (blank not included)
Authentic once-fired .50 caliber brass cartridge body
Brass tube
Cross-style ballpoint refill (included)
Specifications
Style: Ballpoint with integrated bottle opener
Design Detail: Authentic once-fired .50 BMG military brass cartridge body; functional bottle opener
Blank Size: ¾" × ¾" × 2"
Drill Size: 7mm
Turned Section: 1⅛"–2" (adjustable)
Finished Length: 5½"–6⅜" (varies with turned section)
Refill Type: Cross-style ballpoint (included)
Why Turners Love This Kit
It's the only pen kit that also opens a beer — and that's exactly the story you tell at the craft fair right before someone buys it
The real .50 caliber brass cartridge is a built-in conversation piece — every person who picks it up asks about it, and the bottle opener seals the deal
The short 2" blank requirement makes this a great use for premium scrap offcuts — small piece, huge finished impact
An exceptional gift for outdoorsmen, veterans, hunters, and anyone who appreciates a tool with genuine military provenance