CRIMSON NPAS - VFC Spec
SKU: 86380020937

CRIMSON NPAS - VFC Spec

Sale price$9.00 Regular price$10.00
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Description

CRIMSON NPAS - VFC SpecSave 1. 50 off a CRIMSON Patch when purchased together! Our 1j focused NPAS for a huge amount of VFC replicas is finally here! We've found from testing in a variety of VFCs that shot to shot consistency greatly improves when the CRIMSON NPAS is set to around 1j (More details below!). The full list of compatible VFC APFG Maruyama replicas the CRIMSON works with is below: VFC URGI GBBR (all variants) VFC 416 GBBR (all variants) VFC BCM GBBR (all

Save £1.50 off a CRIMSON Patch when purchased together!

Our 1j-focused NPAS for a huge amount of VFC replicas is finally here!

We've found from testing in a variety of VFCs that shot-to-shot consistency greatly improves when the CRIMSON NPAS is set to around 1j (More details below!).

The full list of compatible VFC / APFG / Maruyama replicas the CRIMSON works with is below:

  • VFC URGI GBBR (all variants)
  • VFC 416 GBBR (all variants)
  • VFC BCM GBBR (all variants)
  • VFC SR-16 GBBR (all variants)
  • VFC AK GBBR (all variants)
  • VFC KS-1 GBBR
  • VFC 727 GBBR
  • VFC M933 GBBR
  • VFC M733 GBBR
  • VFC M16A1 / M16A2 GBBR
  • VFC XM177E2 GBBR
  • VFC MP7 GBBR
  • VFC SR25 / M110 GBBR
  • VFC SCAR-H GBBR (all variants)
  • VFC 417/G28 GBBR
  • VFC PSG1 GBBR
  • VFC T91 GBBR (all variants)
  • VFC G36 GBBR (all variants)
  • VFC G3 / HK553 GBBR
  • VFC FAL / OSW GBBR - Install guide here!
  • VFC FNC GBBR (all variants)
  • VFC UMP45 / UMP9 GBBR
  • VFC PPSH GBBR
  • APFG MCX GBBR (all variants)
  • APFG MPX GBBR (all variants) - Install guide here!
  • Maruyama ISO 556 GBBR
  • Maruyama APC9 / SCW9 / SPC9 GBBR (all variants)
  • Marksman K1A GBBR

From CRIMSON:

Any power you could need without sacrificing any consistency

In collaboration with Waldo Dynamics, I am very excited to showcase our new and unique to the market VFC NPAS!

What makes the Crimson NPAS standout from the others on the market?

Let's cut to the chase, what makes this NPAS different from the rest? Especially if you already have one....

Our design incorporates a tighter internal bore which allows for far more consistent FPS results at the 0.9 - 1.2 joule range, making it ideal for anyone operating within those limits. A graph has been made, by the great guys at FireSupport, at the end of our product photos to demonstrate this against the stock valve. This clearly shows just how consistent then Crimson NPAS truly is. A game changer for such a small cost.

Also, don't worry; Just because the bore of the NPAS itself is narrower doesn't mean you can't also achieve higher energy outputs (we have seen past 2 joules on standard barrel lengths with 0.36g BBs). We are also testing reports that it is making people's GBBRs more gas efficient (so far it seems to be true from our tests).

The Basics:

An NPAS allows you to tune your GBBR to your desired FPS/Joule output easily and seamlessly in the field using a simple 1.5mm hex key (found in most hex key tool sets). Once installed (which is demonstrated here on our own very clear video), simply remove your bolt from your GBBR, adjust through the front of the nozzle with a hex key (Clockwise for less energy output, counter-clockwise for more), reassemble and test your results.

This is perfect for players looking to be under limits no matter the time of year, BB weight, or with gas/pressure used. It really is a "must-have" component.

The material used is a stronger Nylon Polymer in the iconic Crimson red, making it extremely easy to identify on your tech bench as well as when it is installed. You will not lose track of who's VFC NPAS is who's (not that you will need any others after this!).

Installing an NPAS will require some teching knowledge and a small amount of tools. Be careful when adjusting your NPAS to ensure you don't totally unscrew the adjustment screw, this goes for any NPAS on the market.

Crimson, it's red

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: 86380020937

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Denise
Port Orchard, US
★★★★★ 1
easily punctured by dog teeth & not durable
Size: Large Size 3, Color: World Cup
I have a medium size dog 25lbs. The tabs all came off within 4 days & deflated/punctured in the same amount of time this ball is not as sturdy as they say.
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Reviewed in the United States on May 26, 2026
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Verified Purchase
Sunshyne
Phoenix, US
★★★★★ 4
Quality product but sold on Amazon cheaper with different seller.
Size: Medium Size 2, Color: White-Blue
The size is the reason for the missing star. Made of good quality but found cheaper from another buyer. My 9month Cane Corso hasn't destroyed it yet and enjoys playing keep away with the other dogs.
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Reviewed in the United States on November 2, 2025
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Verified Purchase
Jenna
Fort Morgan, US
★★★★★ 5
absolutely must buy perfect for dogs. I have a large black lab and he has had so much fun with us.
Size: Large Size 3, Color: White-Blue
I have to say that my dog would be considered an aggressive tower. However, this ball has stayed intact. I love that it comes with the pump. It’s extremely functional very soft for catching can be cleaned. Very easy easy the quality is exceptional. Very functional does have a bounce. I can say he has had so much fun with this since it’s getting it for his birthday on 11/11 I highly recommend this product and would definitely buy again.
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Reviewed in the United States on November 23, 2025
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Verified Purchase
KLBlake
Cuba, US
★★★★★ 5
Perfect for keep-away
Size: Large Size 3, Color: Red-Blue
I purchased one of these for my pup and he has a ball throwing it up in the air and chasing it. Handy for something they can play with alone.
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Reviewed in the United States on May 24, 2026
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J. Smith
Boise, US
★★★★★ 5
70lb dog loves this kind of ball!
This is my dog's favorite style of ball! I have purchased others before, first from a local farm supply store and then others from Amazon, and this ball is of comparable quality to the others! The multi-tag design is great for my dog who love to tug and also to throw toys for himself. It's still inflated for now, but I'm under no pretense that it will stay that way forever. Part of the enjoyment my dog gets from his toys is in their destruction, and while we haven't hit that phase yet I'm sure it will come. This ball is great for medium to large-ish dogs who enjoy a ball that is kicked, thrown, or tugged!
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Reviewed in the United States on March 18, 2026

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