---
title: "12g Co2 Cartridge — £47K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/sports-outdoors/12g-co2-cartridge"
last_updated: "2026-07-31T10:50:12.660Z"
locale: en
meta:
description: "Niche score 44/100 · £47K/yr market · 39K searches/yr · £12.80 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · £47K/yr market · 39K searches/yr · £12.80 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "12g Co2 Cartridge — £47K/yr Amazon UK Niche (2026) - Flapen"
---
# **12g co2 cartridge**
**Skip it**
A concentrated shelf (top 5 take 93% of clicks) — this niche doesn't clear our bar today.
Market size 12Growth 36Conversion 84Competition 6Returns 99Price range 34Avg price 57Brand share 33Review moat 68Quality gap 63
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****9.3%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****798.71**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Good****£12.80**
avg listing price — sweet spot $15–$100
**Growth**
**Okay****+8.7%**
90-day search growth — must beat 0% to launch
**Price range**
**Okay****£4.43–£20.51**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****85%**
top-5 brand share — brands hold most of the demand
**Market size**
**Bad****£47K**
£47K/yr · 39K searches
**Competition**
**Bad****93%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United Kingdom niche tracking, 12g co2 cartridge is a £47K/yr Amazon United Kingdom market (39K searches/yr). The top 5 brands hold 85% of demand. Verdict: Skip it — 44/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **12g co2 cartridge market data**
- **Units sold / yr**
- **3K–4K**
- avg 250–500/product
- **Revenue / yr**
- **£38K–£51K**
- units × avg price
- **Conversion rate**
- **9.3%**
- **Avg BSR**
- **#5**
- **Page quality**
- **0%**
- **Prime**
- **86%**
- **Sponsored**
- **29%**
- **Out of stock**
- **14.6%**
- **Avg brand age**
- **73 months**
- **Avg seller age**
- **202 days**
## **Competition & brand share**
The top 5 products capture 93% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **—flat
**Sellers**
**15**
**Top-5 brand share**
**85%**
Top 20: 85%
**Top-5 click share**
**93%**
Top 20: 100%
**Open market**
**0%**
- Umarex60% - --15% - ICO10% - ARSUK8% - Lotsdonxia4% - AOLS3% - Open — no brand owns it (0%)
## **Demand**
Weekly Amazon search volume, last 8 weeks — +8.7% search growth over the last 90 days.
800600Jun '26Jun '26Jun '26Jun '26Jul '26Jul '26Jul '26Jul '26
[**Open Trend **](https://flapen.com/research/uk/sports-outdoors/12g-co2-cartridge/trend)
## **Top 12g co2 cartridge search terms**
- **12g co2 cartridge**26K/yr+6.9%6.7% conv. - **12g co2 cartridge air pistol**4K/yr+21.0%9.7% conv. - **co2 cartridge 12g**4K/yr+16.3%8.1% conv. - **umarex co2 cartridge 12g**4K/yr-1.8%14.1% conv. [**All search terms **](https://flapen.com/research/uk/sports-outdoors/12g-co2-cartridge/search-terms)
## **Top 12g co2 cartridge products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%£7K30%£14K45%£21K60%£28K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 7 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Umarex 20 x 12g Co2 Gas Capsules Cartridge Air Rifle Pistol Gun Airgun 12 Gram CO2**Umarex**£11.46**4.7★1,207 rev](https://www.amazon.co.uk/dp/B01G21YF9M) [2**BISLEY 12g CO2 Cartridges for Airsoft Guns Pack of 50 Non-Threaded Gas Canisters Steel CO2 Capsules for Airsoft BB Gun CO2-Powered Devices & Gear**--**£17.72**4.2★18 rev](https://www.amazon.co.uk/dp/B0FXMY1VTV) [3**Umarex 12gram Airgun Co2 Cartridge 50 Pack - 12 gram Powerlets Bulbs Suits All Popular Co2 Pellet and BB Guns Inc. Crosman Gamo and Swith Wesson etc.**Umarex**£20.51**4.8★765 rev](https://www.amazon.co.uk/dp/B01G226BTI) [4**12 Gram CO2 Cartridge Non-Threaded (10pk) Airsoft Gas for CO2 Devices**ICO**£8.40**4.4★2,694 rev](https://www.amazon.co.uk/dp/B009IPX33Y) [5**ARSUK 12g CO2 Cartridges Pack of 10 Non-Threaded Gas Canisters Stainless Steel CO2 Capsules for Sporting Goods CO2-Powered Outdoor Devices & Gear**ARSUK**£9.90**4.6★878 rev](https://www.amazon.co.uk/dp/B00345AQNY)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**BISLEY 12g CO2 Cartridges for Airsoft Guns Pack of 50 Non-Threaded Gas Canisters Steel CO2 Capsules for Airsoft BB Gun CO2-Powered Devices & Gear**--**£17.72**18 rev9mo ago](https://www.amazon.co.uk/dp/B0FXMY1VTV) [**Lotsdonxia Tactical Pistol Holster Right & Left Hand Draw IWB/OWB Gun Holster for Concealed Carry Adjustable Waistband Holster for Full-Size Pistols (Black)**Lotsdonxia**£4.43**6 rev1y ago](https://www.amazon.co.uk/dp/B0DPM6WLB8) [**AOLS Refillable Cartridge 12 gram capacity for Airsoft**AOLS**£17.16**23 rev5y ago](https://www.amazon.co.uk/dp/B098SZBGML) [**Umarex 20 x 12g Co2 Gas Capsules Cartridge Air Rifle Pistol Gun Airgun 12 Gram CO2**Umarex**£11.46**1,207 rev10y ago](https://www.amazon.co.uk/dp/B01G21YF9M) [**Umarex 12gram Airgun Co2 Cartridge 50 Pack - 12 gram Powerlets Bulbs Suits All Popular Co2 Pellet and BB Guns Inc. Crosman Gamo and Swith Wesson etc.**Umarex**£20.51**765 rev10y ago](https://www.amazon.co.uk/dp/B01G226BTI)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Lotsdonxia Tactical Pistol Holster Right & Left Hand Draw IWB/OWB Gun Holster for Concealed Carry Adjustable Waistband Holster for Full-Size Pistols (Black)**Lotsdonxia**£4.43**4.2★**▲ 219%**](https://www.amazon.co.uk/dp/B0DPM6WLB8) [**AOLS Refillable Cartridge 12 gram capacity for Airsoft**AOLS**£17.16**3.7★**▲ 81%**](https://www.amazon.co.uk/dp/B098SZBGML) [**BISLEY 12g CO2 Cartridges for Airsoft Guns Pack of 50 Non-Threaded Gas Canisters Steel CO2 Capsules for Airsoft BB Gun CO2-Powered Devices & Gear**--**£17.72**4.2★**▲ 47%**](https://www.amazon.co.uk/dp/B0FXMY1VTV) [**12 Gram CO2 Cartridge Non-Threaded (10pk) Airsoft Gas for CO2 Devices**ICO**£8.40**4.4★**▲ 38%**](https://www.amazon.co.uk/dp/B009IPX33Y) [**Umarex 20 x 12g Co2 Gas Capsules Cartridge Air Rifle Pistol Gun Airgun 12 Gram CO2**Umarex**£11.46**4.7★**— 6%**](https://www.amazon.co.uk/dp/B01G21YF9M)
**~~View all trending →~~**
## **What buyers say about 12g co2 cartridge**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**36%
*“Good quality”*
**Value For Money**33%
*“Great bundle, affordable price”*
**Advertised Vs Actual Product**17%
*“As per listing”*
**Weight Light**6%
*“Lightweight and smooth appearance”*
**Size-Overall**3%
*“good fit”*
**Ease Of Use**3%
*“EASY TO USE”*
### **What buyers complain about **
**Leak-Proof**33%
*“Leaks”*
**Flatness**17%
*“The cap is not perfectly flat it has a slight indentation causing the pin to fail to puncture correctly causing ice up”*
**Quality-Overall**17%
*“Poor quality”*
**Advertised Vs Actual Product**17%
*“not boxed as in the illustration”*
**Strength**8%
*“Just a weak, cheap, paper bag so happy that no cartridges were listed in transit thus time”*
### **Top return reasons **
**Size-Overall**70%
**Leak-Proof**10%
**Defective Material/Parts**5%
**Functionality-Overall**5%
**Compatibility-Overall**5%
**Value For Money**2%
**Advertised Vs Actual Product**2%
**Adhesion/Stickiness**2%
**Quality-Overall**1%
## **Common questions**
- **Is 12g co2 cartridge profitable to sell on Amazon United Kingdom?**
- The niche generates £47K/yr across 7 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +8.7%. Flapen's verdict: Skip it (44/100).
- **How competitive is the 12g co2 cartridge niche?**
- 5 brands and 15 sellers compete. The top 5 products take 93% of clicks and top 5 brands hold 85% of demand.
- **What do buyers complain about in 12g co2 cartridge?**
- Top complaints mined from reviews: Leak-Proof, Flatness, Quality-Overall. The return rate is 0.2%.
- **What does it cost to enter the 12g co2 cartridge niche?**
- Listings span £4.43–£20.51; the average listing price is £12.80 (sweet spot $15–$100). The average incumbent carries 799 reviews — the moat a new listing must climb.
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