The predecessor to the Kaos 3, a clean budget blowback still common on the used market.
Technical Specifications
Operation
Mechanical blowback
Firing Modes
semi-auto
Caliber
.68
Feed System
Gravity hopper
Air Source
HPA/CO2
Operating Pressure
~300 psi
Weight (unloaded)
2.4 lbs
Street Price
$60-100 (used)
Maintenance
Very Low
Notable features: Tool-less bolt, Quick-strip pin, Light body
Pros & Cons
Pros
Easy to clean
Light
Cheap used
Cons
Discontinued
Basic trigger
Best for: Budget beginners, Used buyers, Rec play
Setup & First-Day Tuning Guide
Inspect Cup Seal & Fittings Before Air — Before adding air to the Azodin Kaos 2, inspect the cup seal inside the valve and all macro-line fittings. The cup seal is the #1 failure point on mechanical guns. Replace if cracked or flat — they cost under $5.
Attach Air Source Slowly — Thread on your HPA tank or CO2 tank slowly. Listen at all connections for leaks. HPA is strongly recommended over CO2 for consistency and long-term seal health.
Install Barrel & Loader — Attach barrel and loader before loading paint. A gravity hopper works at 5–6 BPS. An agitating loader prevents jams and is worthwhile at any price point.
Chronograph & Adjust Velocity Screw — Fire 10 shots across the chrono. Adjust the Azodin Kaos 2's velocity screw clockwise to raise, counter-clockwise to lower. Quarter-turn increments. Target your field limit (usually 280 fps).
Shoot 20 Break-In Shots, Then Re-Chrono — Mechanical blowbacks often run 5–10 fps high for the first 20 shots as the cup seal seats. Re-check after break-in and make a final adjustment.
CO2 Rate-of-Fire Warning — On CO2, keep rate of fire under 6–7 BPS. Faster pulls liquid CO2 through the valve causing freeze-ups and seal damage. HPA eliminates this entirely.
Maintenance Schedule
Interval
Task
Detail
After every outing
Barrel squeegee & exterior wipe
Squeegee barrel twice, wipe exterior, check all screws are snug.
Every 3 months or 5,000 rounds
Bolt clean & cup seal lube
Wipe bolt, apply Dow 33 to cup seal and O-rings, function-test.
Every 6 months
O-ring inspection
Replace any cracked, flat, or tacky O-rings. Full kit costs under $10.
Annually
Full teardown & O-ring replacement
Complete teardown, preventive O-ring kit replacement, inspect all springs.
Tool-less bolt removal; lube o-rings.
Common Problems & Troubleshooting
Velocity drops mid-play
Cause: Worn cup seal; CO2 liquid pull; low pressure
Fix: Inspect cup seal first. On CO2, slow your ROF. Try a fresh tank fill.
Bolt doesn't return after firing
Cause: Broken hammer return spring
Fix: Disassemble the Azodin Kaos 2 and inspect the hammer spring. Replace with an OEM spring — they cost under $10.
Ball breaks in barrel (chops)
Cause: Worn detent; hopper not keeping up
Fix: Check the ball detent. If shooting over 6 BPS with a gravity hopper, upgrade to an agitating loader.
Air leaks from barrel
Cause: Worn cup seal
Fix: Replace the cup seal — this fixes barrel leaks in 90% of mechanical blowback guns. Part costs under $3.
Air leaks from grip area
Cause: Valve body O-ring failure
Fix: Apply Dow 33 to the valve body O-ring. Also check all macro-line compression fittings.
Upgrade Path
Barrel
Spring kit
Frequently Asked Questions
Is the Azodin Kaos 2 good for beginners?
Yes — the Azodin Kaos 2 is an excellent first-time gun. It's durable and forgiving of beginner mistakes.
Does the Azodin Kaos 2 run on CO2 or HPA?
Compatible with HPA/CO2. CO2 works but HPA gives significantly more consistent velocity and is better for long-term seal health.
What is the operating pressure of the Azodin Kaos 2?
The Azodin Kaos 2 operates at ~300 psi. Match your regulator output to this spec.
How hard is the Azodin Kaos 2 to maintain?
Very easy — a quick squeegee and occasional O-ring lube. Tool-less bolt removal; lube o-rings.
What loader does the Azodin Kaos 2 need?
A standard 200-round hopper works. An agitating loader prevents jams at higher rates of fire.
How much does the Azodin Kaos 2 cost?
New: $N/A MSRP, typically $60-100 (used) on the street. Used prices vary — check BST forums and eBay for current asking prices.
What barrel thread does the Azodin Kaos 2 use?
The Azodin Kaos 2 shoots .68 caliber. Confirm the specific thread pattern for your variant before ordering a barrel.
What firing modes does the Azodin Kaos 2 support?
Supported modes: semi-auto. Most recreational fields require semi-auto only.
How heavy is the Azodin Kaos 2?
2.4 lbs unloaded. With a full hopper and HPA tank, expect roughly 4.9–5.9 lbs total.
Is the Azodin Kaos 2 worth buying?
The predecessor to the Kaos 3, a clean budget blowback still common on the used market. Strengths: Easy to clean, Light. Trade-offs: Discontinued, Basic trigger.