SKU: 30650150221

Bunkerkings FN Air System - 70ci 4500psi - Midnight Navy BK Knife

Sale price$157.50 Regular price$175.00
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

Bunkerkings FN Air System - 70ci 4500psi - Midnight Navy BK KnifeFN Lite Performance Regulators Ship unassembled from the bottle. Simply screw in the regulator and go play! Small Profile with Consistent & Reliable Performance. The Bunkerkings FN Air 4500 PSI Regulator is engineered for players who demand reliability and consistency, no gimmicks and lightweight performance. When combined with our FN Lite bottles your system will be light, balanced, and responsive. Less weight. Ultimate Reliability. More performance.

FN-Lite Performance Regulators Ship unassembled from the bottle. Simply screw in the regulator and go play!

Small Profile with Consistent & Reliable Performance.

The Bunkerkings FN-Air 4500 PSI Regulator is engineered for players who demand reliability and consistency, no gimmicks and lightweight performance.

When combined with our FN-Lite bottles your system will be light, balanced, and responsive. Less weight. Ultimate Reliability. More performance. Pure dominance.

Key Benefits

  • Improved Consistency
  • Increased Efficiency
  • Fast Recharge Rate
  • Reliable & Serviceable
  • Adjustable between 450-800psi

Tech Specs

  • Factory-set at 750PSI output up to 800psi with adjustment shims, or adjust to as low as 400psi. 
  • Multi-Point Orientation: Mount your reg exactly how you want it.
  • Stainless Steel Fill Nipple: Corrosion-resistant and built to last.
  • Triple-Lock Bonnet System: Secure, stable, and rock-solid under pressure.
  • Pressure Adjustment Pads: Adjust output pressure for your ideal setup using two simple pads -
    • O (circle) = 750 psi
    • (square) = 450psi
    • Each regulator includes an additional fine-tuning adjustment shims to further fine tune the pressure by an 50psi when added (increase) or removed (reduce) to the bottom of the washer stack.
  • Dual O-Ring Bonnet Seal: Redundant design prevents leaks and enhances reliability.
  • Precision-Sealed Gauge: Provides accurate readings every time.
  • UNF Threading: Clean, tight connections with zero cross-threading.

FNLite Means a Smaller & Lighter Bottle, with No Loss in Capacity

The Bunkerkings FNLite Carbon Fiber wrapped bottle line-up is engineered to be the lightest bottle you'll ever need. Simply screw your preferred 4500psi-rated HPA regulator on and get back to killing suckers. 

We've designed the the FNLite bottle to be up to 10% lighter and 9% shorter than the competition while still delivering the same number of shots with no loss in capacity? How do we do it? By using a proprietary DOT/ISO certified  carbon fiber wrapping technology around an aluminum liner, the FNLite shaves off weight and increases the inner volume at the same time.

With the FNLite, we've restored sanity to to bottle sizing that creates the perfect form factor and capacity for every player. Simply make your selection from four lightweight sized bottles: 60ci, 70ci, 80ci, or 90ci.  

FNLite Bottle Comparison

  60ci 70ci 80ci 90ci
Weight 1.4lbs / 635g 1.6lbs / 725g  1.8lbs / 816g 2lbs / 907g
Length 7.5in / 19cm 8.4in / 21cm 9.4in / 24cm 10.25in / 26cm
Diameter 4.2in / 11cm 4.2in / 11cm 4.2in / 11cm 4.2in / 11cm
  • Globally Certified for World Wide Use
  • Meets DOT/TC-UN (ISO 11119-2) Safety Compliance
  • Five-year hydro
  • Different styles & colors available in 60ci, 70ci, 80ci, and 90ci
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 30650150221

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4.1 ★★★★★
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Felicia
Cuba, US
★★★★★ 5
Good value, works great!
Perfect for foaming our milk for cappucinos!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026
Y
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YANETH CONSTANZA BRAVO SALGADO
Lowell, US
★★★★★ 4
Funcional
Funcional
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Reviewed in the United States on January 1, 2026
M
Verified Purchase
Marie EB
Massapequa, US
★★★★★ 5
Affordably priced
I recently inherited an espresso machine and definitely needed a milk frother cup. This one was inexpensive and very nicely made. It is heavy duty and looks beautiful on my coffee bar. Works very well with my espresso cappuccino maker.
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Reviewed in the United States on December 1, 2025
B
Verified Purchase
Bonnie Boe
Carnegie, US
★★★★★ 5
Perfect Size For Home Frothing
I put this to use right away when it came! Cold and windy day called for hot chocolate and steamed milk. I love the measurements and it is easy to clean. I’m going to try my hand at some designs with the included nice double-ended spoon at some point! 12 ounces is big enough for a latte or cappuccino. It is also small enough that I keep it on my espresso machine when I’m not using it! I find that when you’re steaming that the milk sprays out a bit, but admittedly that could just be me lack of steaming skills! 😉
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Reviewed in the United States on November 23, 2025
A
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Andrés F.
Houston, US
★★★★★ 5
Excelente
Excelente
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Reviewed in the United States on June 7, 2026

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