Allen Ultrax Allen 4100 Ultrx Shield Passive Muff Mdgry

The Allen Ultrax 4100 Shield passive earmuff delivers solid, no-frills hearing protection for shooters, range workers, and anyone spending time around sustained noise. Unlike electronic muffs, passive ear protection works instantly with no batteries, no buttons, and no learning curve—just put them on and you're protected. With an NRR rating of 23dB and ANSI S3.19 certification, these muffs are tested and proven to handle the sound levels you'll encounter at the shooting range, workshop, or job site.

The appeal here is simplicity and comfort. The Ultrax 4100 features a razor-slim profile with contoured ear cups designed to sit snugly without unnecessary bulk or weight. The adjustable headband and padded ear cups are built for extended wear—whether you're running a few strings at the range or working a full shift. The medium gray finish is understated and blends in easily. The rubberized exterior holds up to field use, and the folding design collapses down for easy storage in a range bag or truck.

These are passive muffs, meaning they provide consistent attenuation without electronics. That makes them reliable, durable, and maintenance-free. They're a trusted choice for shooters who want effective hearing protection without the cost or complexity of electronic models, and they're equally at home in a workshop or construction environment. If you need straightforward, dependable ear protection that won't let you down, the Ultrax 4100 earns its place in your safety kit.

Key Features

• NRR 23dB passive attenuation—ANSI S3.19 certified for consistent, proven hearing protection
• Razor-slim contoured ear cups for a low-profile, comfortable fit during extended sessions
• Adjustable headband with extra-padded design for individualized fit and all-day comfort
• Durable rubberized exterior built to withstand field use and daily wear
• Compact folding design for quick storage in a range bag, backpack, or vehicle
• No batteries or electronics—passive protection works instantly and reliably

Specifications

Frequently Asked Questions

What's the difference between passive and electronic ear protection?

Passive earmuffs like the Ultrax 4100 provide fixed noise reduction with no electronics. They work instantly—no batteries to replace, no buttons to fiddle with—and deliver consistent attenuation every time. Electronic muffs amplify quiet sounds and suppress loud impulses, which is valuable for hunting or tactical scenarios, but passive muffs are simpler, more durable, and cost less. For range shooting and industrial use, passive protection is reliable and proven.

Can I wear these for extended periods at the shooting range?

Yes. The Ultrax 4100 is designed with comfort in mind for prolonged wear. The padded headband and soft ear cups reduce fatigue, and the slim profile keeps weight minimal. That said, comfort varies by head shape and size—what works for one shooter might need adjustment for another. The adjustable headband lets you dial in a fit that works for you.

How do I know these will provide adequate protection?

The Ultrax 4100 is tested and certified to ANSI S3.19 standards with an NRR of 23dB. That certification means the muffs have been independently evaluated for hearing protection performance. An NRR of 23dB is solid protection for range work and general shooting environments.

Do these muffs fold up for easy transport?

Yes. The Ultrax 4100 features a foldable design that collapses down for compact storage in a range bag, backpack, or vehicle.