SKU: 45184773635

Waldo Dynamics VFC AR/MCX Winter Hammer Spring

Sale price$9.00 Regular price$10.00
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 3 - Aug 8

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Waldo Dynamics VFC AR/MCX Winter Hammer SpringA drop in hammer spring replacement which allow your VFC AR APFG MCX to be more gas efficient and work better in colder weather. From Waldo Dynamics The One Spring You Need For Efficiency All Year Round Boost your VFC GBBRs performance year round with the Waldo Dynamics Winter Hammer Spring, precision engineered for the VFC AR and MCX GBBR platforms. Designed at 75% strength, this hammer spring delivers improved gas efficiency over the stock component

A drop in hammer spring replacement which allow your VFC AR/APFG MCX to be more gas efficient and work better in colder weather.

From Waldo Dynamics

The One Spring You Need For Efficiency All Year-Round

Boost your VFC GBBRs performance year-round with the Waldo Dynamics Winter Hammer Spring, precision-engineered for the VFC AR and MCX GBBR platforms. Designed at 75% strength, this hammer spring delivers improved gas efficiency over the stock component but can still be used all year around. 

That's right; despite this being an overall weaker hammer spring you can still use this in peak summer on your usual green gasses. We performed some extensive testing in the last few months in climates all over the world and found no issues with it's capabilities. This is just a very simple upgrade over the stock spring that can be installed within 3 minutes (video guide here).

Finished in a distinctive blue coating, the finish not only reduces friction (giving you a butter smooth shooting experience) but it also helps you tell it apart from other springs you may have.

This product is compatible with;

- All VFC AR based GBBRs (KS1, BCM, URGI, XM series etc)
- VFC 416 GBBR
- APFG MCX GBBR 

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: 45184773635

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4.2 ★★★★★
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Tiffany Ashley
Alexandria, US
★★★★★ 5
Super cute
Size: 4T, Color: Black/Cool Cats
Runs a bit big but cute! Such a great deal will update after washing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026
R
Verified Purchase
ReemAzhar
Los Angeles, US
★★★★★ 4
Great set
Size: Medium, Color: Pink/Unicorn
Exactly as pictured, vibrant print. Fit my 6 year old, size up by one size for a looser fit.
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Reviewed in the United States on November 2, 2025
K
Verified Purchase
Ky
West Palm Beach, US
★★★★★ 5
Excellent quality
Size: XX-Large, Color: Pink/Unicorn, Size: XX-Large, Color: Pink/Unicorn
I purchased all the other styles as a small body adult but I was hesitant to get this color because it was way too childish ,but I saw it on sale decided to grab it , and I end up liking it the most! Life is funny @ times
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Reviewed in the United States on November 19, 2025
S
Verified Purchase
Saddy & Jeremy Barr
West Palm Beach, US
★★★★★ 5
Bigger than expected.
Size: Small, Color: Black/Cool Cats
Love it . Ingot this for my 6 years old . But she is petite and I keep a bigger size becuase they say was bigger . But no my daughter is skinny and 50 pounds . That size was twice bigger on her 😳... so is inconsistent the comment and size. My daughter is really petite . She normally used size 4/5 .
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Reviewed in the United States on July 1, 2025
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Verified Purchase
Luis Marquez Jr
Boise, US
★★★★★ 5
Cute Kitty Amazon Essential outfit
Size: 3T, Color: Black/Cool Cats
Very impressed with the material! Washed several times since purchased no shrinkage and the shirt didn’t fade . Quality was great very comfortable and cute design for our 2 year she loved the kittys .
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Reviewed in the United States on September 6, 2025

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