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HK Army 20oz Aluminum CO2 Tank

Curated from 40 real Reddit conversations

Refreshed on: April 11, 2025

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HK Army 20oz Aluminum CO2 Tank

Brand: HK Army
Price: $27
Snoop Score:
3.7
Sentiment
5.0
Popularity
2.9
Technical
2.2
Buy on Amazon for $27See All CO2 Systems Reviews
As an Amazon Associate, I earn from qualifying purchases.

Snoop's Take

The HK Army 20oz Aluminum CO2 Tank is designed for paintball and airsoft enthusiasts who seek a reliable and high-pressure compressed air system. This tank offers an affordable option for players looking to enhance their gear without breaking the bank. Consumer sentiment around the HK Army tank reveals a mix of praise and criticism. Many users appreciate the tank's affordability, with one noting, "there is no better deal on a tank right now not even c02 wise than the hk army 48/3000ci HPA tank for $25." However, some feedback highlights that the tank lacks a regulator and that CO2 technology is becoming outdated, posing limitations in functionality for modern markers. Overall, while the HK Army 20oz Aluminum CO2 Tank is well-regarded for its price point and performance, potential buyers should be aware of its limitations, especially the absence of a regulator. It is recommended for budget-conscious users who prioritize value but may not be the best choice for those seeking the latest technology in air systems.

Not for you? Check out our other rated CO2 Systems

It is very much worth buying as it is the most crispiest shooting/sounding GBB rifle ive ever used.

Positive Feedback

the tank itself doesn’t vary much in functionality

Negative Feedback
Product
3.7
HK Army 20oz Aluminum CO2 Tank
Buy on Amazon for $27
Entry-Level Play
8 / 10
Tournament & Competitive Use
7 / 10
On-Site Refilling
5 / 10
Small Cartridge Adaptation
5 / 10
See how this compares to all CO2 Systems

What it does well!

Key strengths users can’t stop talking about.
Crispiest shooting/sounding GBB rifle experience
“It is very much worth buying as it is the most crispiest shooting/sounding GBB rifle ive ever used.”➕
Affordable pricing for quality tank
“there is no better deal on a tank right now not even c02 wise than the hk army 48/3000ci HPA tank for $25.”➕

Where it needs some work!

Areas to watch—feedback on possible improvements.
Tank does not include a regulator for use
“the tank itself doesn’t vary much in functionality”➕
“a tank has no "regulator" included so there's no way to fill it/use it”➕
“what HPA tank I should get or is CO2 is the better option”➕
CO2 is considered outdated technology
“CO2 is obsolete in this day and age for almost all markers you would buy apart from a couple of things like a tipx or some JT thing.”➕

Compare On All Talked About Dimensions

Product NameImagePriceScoreCompareSee DetailsBuy Now
Maddog 20 Oz Refillable Aluminum CO2 Paintball TankMaddog 20 Oz Refillable Aluminum CO2 Paintball Tank$34
8.4
DetailsBuy
ICO 10pcs 12 Gram CO2 CartridgesICO 10pcs 12 Gram CO2 Cartridges$9
6.5
DetailsBuy
Action Village 20oz CO2 Paintball TankAction Village 20oz CO2 Paintball Tank$28
6.2
DetailsBuy
JT CO2 Paintball Tank AdaptorJT CO2 Paintball Tank Adaptor$6
6.0
DetailsBuy
Maddog Paintball CO2 Fill StationMaddog Paintball CO2 Fill Station$44
5.3
DetailsBuy
HK Army 20oz Aluminum CO2 TankHK Army 20oz Aluminum CO2 Tank$27
3.7
DetailsBuy

Core Power Plays

The specs and strengths that make it shine.
Choice of HPA tank doesn't affect performance significantly
“choice of HPA tank doesn't really affect performance.”➕
Understanding CO2 tank pressure behavior
“The pressure inside the tank will always be the *vapor pressure* of CO2, which is temperature-dependent, right up until the supply of CO2 is exhausted.”➕
Testing specifications for Bazooka Ball
“A Bazooka Ball weights 11 grams. Paintball Markers can be adjusted to 43 feet per second.”➕
Inquiry about tank dimensions for potential buyers
“What are the outside diameters of the tanks. If 2 inches or less pump players may buy them.”➕
Discussion on tank regulator threads
“I cannot find anywhere what type of thread is on the output of most tank regulators like the HK Army 36CI / 4500PSI tanks'.”➕
“Any idea how you would interface the regulator to a normal line fitting? ie, a .830-14 female to G1/4 adapter?”➕
“I think it’s CGA320 CO2 valve, 1.125″ -12 UNF. That was the c02 threads, same as a soda stream cylinder.”➕
Discussion on the benefits of adjustable tank regulators
“What is the benefit, if any, of being able to adjust tank regulator? It has been 15 years since the last time I picked up a paintball gun and back then all I ever used was a CO2.”➕
“Given the fact that the CZR operates with a traditional ASA and macro line that feeds into a traditionally-located HPR, I concur with that recommendation.”➕

Hidden Hero Hacks

Unexpected tricks and side‑door uses you’ll love.
Discussion about hot water dispensing capability
“Ninja Luxe Cafe Premier Early Review Not sure how long this review will end up being, but a few note”➕
“Great review! Is it true that the unit cannot easily dispense hot water ? I like doing Americano and it’s the only thing that is putting me on the fence about buying one”➕
Discussion about improving tank aesthetics and plant growth
“I thought it looked good until I took this photo and realised that it’s not aesthetically pleasing as it used to be.”➕
Combining paintball with another regulator
“Dude thank you so much we are combining the paintball with another regulator and we couldn’t find adapters at all”➕
Using hoses for air supply
“Older paintball markers utilize plastic hoses and pouch in fittings that use 1/8" npt.”➕

Buyer’s Cheat Sheet

What to check before you click ‘Add to Cart.’
Discussion about avoiding unqualified users in transactions
“WTS LCT Rusfor Guns, KWC USP .45, HPA Tank Setup, GBBR Mags, Parts, and Accessories! [https://imgur.com/a/airsoft-sell-images-kob7Biq](https://imgur.com/a/airsoft-sell-images-kob7Biq) <------ Images of what I'm selling, Please be sure to comment before sending a PM!”➕
“/u/MapOk1938 has the flair: 12 Transactions | Trusted Senior”➕
Discussion about tank capacity and usage
“The biggest tank you can get.”➕
Discussion on proper fittings for HPA tanks
“There was no way to adjust velocity and this was before scenarios had rules around nerf rockets etc.”➕
Discussion about air usage depending on the marker
“I have a ninja lite carbon fiber tank 68/4500 attached to a 160R and it will shoot a full Dye LTR hopper and about 10.5 pods before I started running out of air.”➕

Cautionary Callouts

Know the pitfalls before they catch you off guard.
Caution about using paintball tanks in pressurized systems
“Im looking at using a paintball tank for a project which involves pressurized air.”➕
“Most anything you can buy from the hardware store isn't rated for this pressure.”➕

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