are they ok for a smith&wesson 686-6model

No idea but if it's a CO2 pistol then should be OK Ring a gunshop and ask !!

Is this for 20 or 5? Main heading says 20. Description says 5.

It is for 20, the capsules actually come in boxes of 10. The "5" seems to be misleading. Cannot say how good they are though as the pistol I bought them for had to go back to the manufacturer before I got to use them

Will they work with a 1.77 air gun

Only if the air gun is designed to work with 12g CO2 capsules

question but how do u store co2 bulbs safely

If for an air pistol/rifle keep separately and away from direct heat. Remove from gun after use even if not empty.

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20 x 12g Co2 Gas Capsules Cartridge Air Rifle Pistol Gun Airgun 12 Gram CO2

Product ID: 47934522

Details

Brand
Umarex
Colour
Silver
Item weight
12 Grams
Material
mild steel
Product dimensions
8.3L x 1.9W x

🔋12g CO2 power boost

⚙️Precision-engineered mild steel

🛡️Silicone lubricant for valve protection

28902CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💨 Power your precision with every shot – don’t get left behind!

BULK PACK CONVENIENCE - 20 capsules per pack means you’re always ready for extended shooting sessions without interruption.
PREMIUM BUILD QUALITY - Crafted from durable mild steel to withstand rigorous use and ensure longevity.
LOW MAINTENANCE DESIGN - Built-in silicone lubricant reduces valve wear and keeps your airgun running smoothly.
TRUSTED BRAND EXCELLENCE - Umarex leads the market with a 4.7-star rating and top ranking in CO2 systems.
CONSISTENT POWER DELIVERY - Each 12g capsule delivers reliable CO2 pressure for optimal shooting performance.

Umarex 20-pack of 12g CO2 gas capsules offers high-quality, silicone-lubricated cartridges made from mild steel, designed to provide consistent power and reduce maintenance for air rifles and pistols. Perfect for serious shooters seeking reliability and durability in every shot.

Specifications

ASIN	B01G21YF9M
Best Sellers Rank	1,020 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 1 in CO2 Systems
Brand Name	Umarex
Closure Type	Open Top
Colour	Silver
Customer Reviews	4.7 4.7 out of 5 stars (1,216)
Item Dimensions L x W x H	8.3L x 1.9W x 8.3H centimetres
Item Weight	12 Grams
Material Type	mild steel
Number of Compartments	1
Number of Items	20
Unit Count	1.0 count

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