Bunkerkings FN Air System - 70ci 4500psi - Blood Red BK Knife
SKU: 78454526580

Bunkerkings FN Air System - 70ci 4500psi - Blood Red BK Knife

Sale price$157.50 Regular price$175.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

Bunkerkings FN Air System - 70ci 4500psi - Blood Red 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: 78454526580

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CK
Los Angeles, US
★★★★★ 5
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Size: 9-12 Months Infant, Color: Eliza Pink
The Robeez First Kicks were the perfect solution for 10-month baby girl who is starting to walk with assistance. She walks barefoot at home, but we wanted a solution for the times she is in public places and wants to get down and walk a little. The shoes can be worn with socks to keep her feet warm when it is cool outside.
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Reviewed in the United States on November 8, 2025
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Kimberly
Omaha, US
★★★★★ 5
Cute - durable.
Size: 9-12 Months Infant, Color: Eliza Pink
Good quality. We have ordered the smallest show, it is worked perfectly. We liked them so much when she outgrew them we bought the next size (2 times now). Just wipe with damp cloth to clean.
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Reviewed in the United States on April 13, 2026
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ThatMImomPaige
Pawtucket, US
★★★★★ 5
Slip free bottom and Durable!
Size: 12-18 Months Toddler, Color: Sebastian Shark Blue, Size: 12-18 Months Toddler, Color: Sebastian Shark Blue
These are very durable and have the flexibility for your little ones foot to grow as it should! They provide elastic-like material around the ankle for easy on & off, have a slip-free bottom, and are soft and cozy. These come in many different designs as well, I would say these are definitely worth the money! Plus, super cute!!
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Reviewed in the United States on August 14, 2025
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Port Orchard, US
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This little piggy
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Love Robeez! Great for your little toddler walker. Made well and so darn cute Great baby shower gift.
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Reviewed in the United States on January 16, 2026
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Amazon Customer
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★★★★★ 5
Cute & practical shoes for babies!
Size: 12-18 Months Toddler, Color: Liam Chocolate Leather
Loved the slip resistance and how easy they are to put on! The quality seems really great! The shoes did end up being too big for my little man so I did have to return but plan to purchase from this shop again!
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Reviewed in the United States on November 8, 2024

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