Does it fit in a byrna?

These are 50 Cal aluminum balls which fit for T4E TR 50, HDP 50, etc. If you're looking for 68 Caliber balls, please try this: https://www.amazon.com/gp/product/B0BZRKHBKD

How much does one ball weight in grams and also what is the actual diameter of one ball?

These are a hard plastic. They are .50 caliber which is 1/2 inch They are pretty light weight

Will they stop a person or put them down

That I imagine would all depend on the person and if any thickness of clothing or armor to be a factor but it would hurt, I would imagine, and change most people minds of possibly doing you harm

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Alien Play 100 Rounds Solid Aluminum 50 Cal. Paintball Ammo for Self Defense, 2.8 Gram .50 Caliber Powerful Projectiles Fit for t4e TR50/HDR 50

Product ID: 605183875

Details

Brand
Alien Play
Colour
Silver
Model name
50 Cal. Hard
Size
50. Cal
Sport
Paintball

🎯Uniform .50 caliber for consistent velocity

🔩Top-class solid aluminum alloy

⚙️2.8g perfect projectile weight

Description

🎯 Lock, Load, Lead: The Ultimate Aluminum Ammo Upgrade

REUSABLE RELIABLE - Smooth, jam-free design that’s easy to recover and reuse, maximizing every round’s value.
HEAVIER HARDER BETTER - At 2.8 grams each, these rounds pack more punch than standard rubber or nylon balls.
PRECISION POWERED IMPACT - Engineered from premium aluminum alloy for unmatched durability and penetration.
VERSATILE DEFENSE TRAINING - Ideal for home defense and target practice—train like a pro, protect like a boss.
CONSISTENT VELOCITY EVERY SHOT - Snug .50 caliber fit prevents gas leaks, ensuring reliable, straight flight and accuracy.

This pack of 100 solid aluminum .50 caliber paintball rounds weighs 2.8 grams each, crafted from high-grade aluminum alloy for superior impact and penetration. Designed for perfect compatibility with t4e TR50, HDR50, and similar models, these rounds deliver consistent velocity with a snug fit that prevents gas leakage. Ideal for both serious home defense and precision target practice, they outperform lighter rubber and nylon alternatives with reusable, jam-free reliability.

Specifications

ASIN	B0BZRGDF7N
Best Sellers Rank	#75,961 in Sporting Goods ( See Top 100 in Sporting Goods ) #4 in Paintballs
Brand Name	Alien Play
Caliber	0.5
Color	Silver
Cross Section Shape	Round
Customer Reviews	4.5 4.5 out of 5 stars (653)
Included Components	hard material
Item Weight	2.8 Grams
Manufacturer	Alien Play
Material Type	Aluminum
Model Name	50 Cal. Hard Aluminum Balls
Number of Items	100
Shape	Round
Size	50. Cal
Sport Type	Paintball, Target Shooting
Style Name	Classic

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