Rifle Barrel Cooler — 5.56 Magwell (Main Body)

A modular cooling system that forces fan-driven airflow up through rifle barrels for speed cooling. The main body accepts and cools up to 3 rifles simultaneously. Add-on modules can be linked to expand capacity — each add-on supports +2 rifles.

What’s included

• Main cooler body (fits 5.56 magwell) — supports 3 rifles.

• Standard cooler attachment accepts 5-inch (diameter) fan mounting (Air blower P3118 fan not included).
  

• Air vent caps.

Optional

• Add-on body (links to main body) — adds capacity for 2 additional rifles per add-on. Multiple add-on bodies can be added to cool 20+ rifles at the same time.

• Custom diameter fan adapter available on request.
  
  

Pricing

• Main body (3-rifle capacity): $100
  
  

Specs (default configuration)

• Magwell fit: 5.56 (magwell-shaped mounting)

• Main body capacity: 3 rifles

• Add-on capacity: +2 rifles per add-on (Not included)

• Standard fan mount: 5 in (diameter)

• Material: PLA
  
  

Usage & Safety

• Bolt must be locked back and dust cover closed before use — do not insert rifles with bolt forward.
  

• Fan must be securely mounted and rated for continuous operation. Use only fans with appropriate safe operating specs.
  

• Do not allow heat sources or open flames near the unit. The unit will melt if put next to a hot supressor.

• 3D-printed items are not intended to withstand high mechanical stress, impact, or extreme heat unless otherwise specified. Misuse, modification, or use outside of intended design parameters may result in breakage
• This device is intended solely for the purpose of circulating ambient air through the barrel to assist in cooling. The use of any alternative device or method that introduces chilled, refrigerated, or compressed cold air may result in structural damage, loss of integrity, or premature wear to the barrel and related components.