Fast Cap Adapter - Co2 Cylinder Cartridge Quick Change - Compatible with BYRNA SD, EP, LE, HD (Black)
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Fast Cap Adapter - Co2 Cylinder Cartridge Quick Change - Compatible with BYRNA SD, EP, LE, HD (Black)

4.5/5
Product ID: 543965771
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Details

  • Brand
    K20 Tools
  • Color
    Black
  • Material
    Aluminum
  • Product Dimensions
    0.86"L x 0.8"W
  • Included Components
    (1) Fast Cap
Seconds to reload
🔩Hand-tightened secure fit
🖤Durable anodized aluminum

Description

⚡ Reload Faster, Perform Better — Never Miss a Beat!

  • RELOAD IN A FLASH - Swap CO2 cartridges in seconds—no tools needed, no downtime.
  • LIGHTWEIGHT COMPACT - Minimal bulk and weight, perfect for on-the-go professionals who demand efficiency.
  • SLEEK DURABLE DESIGN - Anodized black aluminum finish combines style with rugged reliability.
  • UNIVERSAL COMPATIBILITY - Works seamlessly with BYRNA SD, EP, LE, and HD models for versatile use.
  • EFFORTLESS HAND TIGHTENING - Secure, leak-proof seal with easy manual tightening—no over-torquing risks.

The Fast Cap Adapter by K20 Tools is a precision-engineered CO2 cartridge quick-change adapter compatible with BYRNA SD, EP, LE, and HD models. Crafted from anodized black aluminum, it enables tool-free, hand-tightened cartridge swaps in seconds, ensuring a secure and leak-proof fit. Lightweight and compact, it’s designed for professionals who value speed, reliability, and sleek functionality.

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Specifications

ManufacturerK20 Tools
Item Package Dimensions L x W x H5.55 x 3.46 x 1.26 inches
Package Weight0.05 Kilograms
Item Dimensions LxWxH0.86 x 0.8 x 0.75 inches
Brand NameK20 Tools
Warranty DescriptionWarranty of 60 days after delivery date
Model NameFast Cap Adapter
Suggested Usersunisex-adult

Reviews

4.5

All from verified purchases

A**X

Fits. Works. Improves.

Fits. Works. Improves. What more do you want?Even if you tighten it a bit more with the mag tool and have to loosen it with the mag tool (which you don’t have to do at all, but you can if you want), it’s still a massive upgrade from the original design.

P**N

Appearance is not performance

The image shown to me from this listing was for a matte black cap, but I received a shiny silvery one. Not an issue, but I'd have rather liked it in black.It does thread all the way into my Byrna SD without CO2 (8g) installed, but only two threads deep with CO2. After a quick shake test, I was pleased to learn that although threads are still visible on the cap after installing, the CO2 is snug in its spot as it should be. I'm receiving the CO2 booster soon and I'll update the review if anything is different with that.EDIT: I'm an idiot and tried to install the CO2 Booster on top of a SD with HI VIZ installed (off market?)Instead, I fit-tested for the boosted on the LE and it sits very nicely, leaving less than half a thread exposed with the 12g CO2 cartridge installed

J**Y

Faster

Much faster to reload

E**C

It's Great

The wind blew it away, but I found it. It works great in my bryna launcher.

R**Y

Change cylinders without a tool.

That's all this is and all it needs to be. The Byrna will let you empty a few mags on one CO2 cylinder, so maybe it's not important to be able to quick-change the cylinder like it could be to load a new mag. Still, having to find an Allen wrench when you do need to put in a new cylinder is a pain. Put this in its place and screw and unscrew using your fingers. The Byrna really ought to come with this piece.

P**E

If you have a Byrna this is “ a must have “ item.

Lots better than the original. Design is obvious.

H**E

Well done

Machined to a high standard please know you are adding at least 1/2 inch to the Pew Pew.

B**L

Great idea, but poor execution

I love the idea of having the ability to change a co2 cartridge on a Byrna without a allen wrench (even though there is a built in allen wrench on Byrna magazines).II bought 2 of these and same results on both on 2 different Byrna SDs. The cap will screw in without binding - without a co2 cartridge. But with a co2 cartridge the cap binds within one thread screwed in. I did not force it because I didn't want to cross thread these caps or my brand new BYRNA SD. And trying several different brands of co2 cartridges - the same results on all. Maybe these caps were designed for the larger Byrna that holds a 12 gram co2 cartridge, but this product is advertised as fitting the SD. And a message for this supplier: I am planning on buying several more Byrna's to give away as gifts. So far I have bought 3, 2 are gifts to family. I would have bought one of these caps for each of the gifted Byrna's.

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TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Fast Cap Adapter Co2 Cylinder Cartridge Quick Change Compatible Byrna | Desertcart Tunisia