What is the protection rating for these with gunfire?

I don't know the actual rating per se but I have used these with shotgun, pistol and AR15 with no issues of bleed through whatsoever. They functioned flawlessly every time. In between lulls toy can hear range commands clearly and can carry on regular conversations without having to shout.

What is the main difference between these and the Custom Molded Earplugs?

Totally different. Custom molded plugs go deeper into the ear canal past the second bend. The Decibullz are only molded to the outside of the ear or bowl. The greatest protection is when it’s molded to the aperture, or opening, through the second bend. Custom molded plugs can be made with a filter which blocks noises over 85dB but allows softer sounds in, such as conversation. Cost is about the same. Trust me, get custom molded plugs.

They allow me to ear voices (colleagues) and block noises in marine engine room? Not blast, is a constant noises

Our Percussive Filters are designed to block out sudden loud percussive noises such as an explosion or gunshot. If you are looking for consistent noise reduction I would recommend checking out our regular Custom Molded Earplugs https://www.amazon.com/Decibullz-Earplugs-Comfortable-Protection-Shooting/dp/B00WIXL6IM/ref=sr_1_2?ie=UTF8&qid=1494436138&sr=8-2&keywords=decibullz. If you have any other questions please feel free to contact us at support@decibullz.com.

Thanks for reaching out. The new percussion filters are designed to block out loud percussive noises while still allowing ambient noise to pass through. When a loud percussive noise is not present the earplugs will have an NRR of around 10. As soon as a gun blast or any other loud percussive noise goes off, the filter will close bringing the NRR up to as high as 33.

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Decibullz - Custom Molded Percussive Filters, Custom Molded Hearing Protection

Decibullz - Custom Molded Percussive Filters, Custom Molded Hearing Protection

Product ID: 257464580

Details

Brand
Decibullz
Color
Black
Material
Plastic
Recommended Uses For Product
Noise
Size
1 pair (Pack

🎯31 dB noise reduction rating for situational awareness

🔊ANSI IPIL certified 166 dB impulse protection

♻️Re-moldable custom thermo-fit silicone earpieces

₩200638

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔇 Protect your ears without missing a sound — the ultimate in custom hearing defense.

PEAK IMPULSE DEFENSE - Certified to suppress gunshots & explosions up to 166 dB, safeguarding your hearing in high-stakes moments.
SEAMLESS INTEGRATION - Compact design fits effortlessly under headsets and earmuffs, maintaining sound directionality and reducing ear canal irritation.
CUSTOM MOLDED COMFORT - DIY thermo-fit silicone molds perfectly to your ear for a secure, all-day comfortable fit that’s fully re-shapeable.
BATTERY FREE RELIABILITY - Physical percussive filters mean zero batteries, zero downtime—always ready when you need protection most.
SITUATIONAL AWARENESS ON - Low attenuation lets you hear voices and ambient sounds clearly—never miss a beat in critical environments.

Decibullz Custom Molded Percussive Filters combine advanced impulse sound protection certified up to 166 dB with a unique DIY thermo-fit silicone mold for personalized comfort. Designed for shooting and military use, these reusable earplugs provide 31 dB noise reduction while preserving situational awareness and sound directionality. Battery-free and compact, they fit easily under communication gear, making them ideal for all-day use in demanding environments.

Specifications

ASIN	B06XN6B7M1
ASIN	B06XN6B7M1
Best Sellers Rank	#15,479 in Sporting Goods ( See Top 100 in Sporting Goods ) #5 in Hunting & Shooting Earplugs
Brand Name	Decibullz
Color	Black
Customer Reviews	3.8 3.8 out of 5 stars (1,928)
Customer reviews	3.8 3.8 out of 5 stars (1,928)
Date First Available	30 July 2017
Department	""
Is Discontinued By Manufacturer	No
Item Dimensions	11.4 x 8.9 x 3.8 centimeters
Item Form	Pair
Item Weight	73 g
Item model number	854843005599
Manufacturer	Decibullz
Manufacturer	Decibullz
Manufacturer Part Number	FLTR-SHO-BLK
Material Type	Silicone
Model Number	854843005599
Noise Attenuation	31 decibels
Noise Reduction Rating	31 Decibels
Number of Items	1
Product Dimensions	11.43 x 8.89 x 3.81 cm; 72.57 g
Product Style	Custom
Recommended Uses For Product	Noise Protection
Reusability	Reusable
Single Number Rating	31 Decibels
Size	9x6x4
Sport Type	Hunting, Shooting
UPC	854843005599
Unit Count	1.0 Count

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