.50 Calibre BMG Bullet Keyring | Barrett Sniper Rifle

The .50 Cal

John Browning designed the .50 BMG – Browning Machine Gun – at the end of the First World War, scaling up the .30-06 to stop aircraft and armoured vehicles. It entered service in the M2 heavy machine gun, “Ma Deuce”, which has been in use for more than ninety years.

In the 1980s Ronnie Barrett built a shoulder-fired rifle around the round, and the Barrett M82 made the .50 cal famous as an anti-materiel and long-range sniper cartridge.

Is It Too Big for a Keyring?

Honestly, for some people, yes. At around 138 mm long and well over 100 g, this is a statement piece. Plenty of buyers hang it from a bag, a toolbox or a gun cabinet key, or keep it on a desk. If you want something you will forget is in your pocket, choose a smaller round.

How It Is Made

Each case is once-fired brass, cleaned and polished, resized to full length and fitted with a full metal jacket bullet – a lead core inside a harder jacket, subject to availability. A steel swivel pin goes through the primer pocket.

More .50 Cal

• .50 cal bullet bottle opener – the same round, made into an opener
• .50 cal gift box – sized for this round
• .338 Lapua Magnum round – the other big sniper cartridge

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.50 Calibre BMG Bullet Keyring | Barrett Sniper Rifle

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1-2 of 2 reviews

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1. 

   Kayley M.

   Verified owner

   November 30, 2025

   Amazing experience. Was kept updated with delivery came very well packaged.

2. 

   rpbalchin.kuwait

   Verified owner

   August 25, 2023

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   Customer Satisfaction :

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   This is a great piece to have. Awesome finish, fantastic service. Highly recommend to all.

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FAQ

Q: How big is it? About 138 mm long with a 13 mm bullet – see the Additional information tab for full specifications.

Q: Is it a real .50 cal round? Yes – a genuine once-fired .50 BMG (12.7x99mm) case with a seated FMJ bullet. Not a replica.

Q: Is it safe to carry? Yes. It is fully inert and legal to own and carry in the UK without a licence. Always check with your airline before travelling abroad with this item.

Q: Is it heavy? Yes – it is the heaviest keyring we make. Many people use it on a bag or keep it as a desk piece.

Q: Does it come in a box? The .50 cal gift box is sold separately and fits this round.

Q: Can it be engraved? Yes – see our laser engraving page. The large case leaves plenty of room.