How Do Airsoft Grenades Work?

Pull the pin, count to three, and toss—grenades are one of the quickest, most reliable ways to clear a room, flush out foxholes, or take down multiple enemies at once.

Real grenades use a small fuse and a powerful explosive charge to send shrapnel flying. Airsoft grenades simulate this to deliver a barrage of BBs (or sound) to awaiting combatants. Unlike actual, military-grade grenades, they generally don't use explosive charges to get the job done.

So, how do Airsoft grenades work then?

It depends. They can use gas, springs, time delays, impact triggers, or sonic bangs to eliminate enemies. The right choice for you depends on your playstyle, opponents, and local arena rules.

What Counts As An Airsoft "Grenade"

Airsoft grenades are more diverse and less destructive than their real counterparts. Rather than simply exploding into a cloud of shards, Airsoft grenades run the gamut from simple BB-scattering devices to imitation mines.

They can all clear spaces, eliminate enemies, and force movement—it just depends on how you put them to use.

How Grenades Are Used In Gameplay

Airsoft players primarily use grenades to:

• Clear rooms and press players out of corners
• Flush out static, camping players hiding behind cover
• Create push windows, allowing your team to advance on new positions

Different grenades are more effective in different combat scenarios. With several types to choose from, the key to becoming a successful grenadier is learning when to use each.

Types Of Airsoft Grenades

Understanding Airsoft grenades can help you excel in the arena. More importantly, you'll know how to maintain safety and compliance with venue rules.

Gas-Powered BB Scatter Grenades (Frag Grenades)

Gas-powered BB scatter grenades launch a burst of small plastic projectiles in every direction. They charge up via green gas or carbon dioxide (CO2) and, unlike actual grenades, aren't particularly loud when they explode.

CO2 "Bang" Grenades (Replaceable Shell Types)

CO2 bang grenades likewise charge via gas (CO2 only). Unlike scatter grenades, however, they produce a loud bang when they discharge, adding an element of shock to the barrage of Airsoft BBs. They generally feature a removable outer shell, which must be disposed of or replaced after use.

Sound Grenades (No BBs Fired)

Sound grenades don't disperse any BBs, but instead rely on a loud, commanding boom to take out your opponents. They work based on proximity rules, so everyone within a certain radius of the grenade is considered out after the explosion.

Time-Delay Grenades

Like real grenades, time-delay Airsoft grenades offer a short window of calm before the explosive storm. They generally go off a few seconds after being activated, though delays vary based on model.

Impact-Activated Grenades

Impact-activated grenades detonate upon contact with a hard surface, such as a floor, wall, or enemy combatant. After a strong enough collision, an internal trigger sets off the device, sending BBs soaring at your opponents.

Spring-Powered Grenades

As the name suggests, spring-powered grenades use a compressed internal spring to launch BBs outward once triggered.

Launcher Grenade Shells (40mm-Style Rounds)

Launcher grenades are the granddaddy of Airsoft explosives. They're large and, instead of throwing them by hand, you shoot them from a specially-designed grenade launcher. They use a gas release mechanism to disperse BBs over their target.

Pictured: ASG Storm 360 Impact Gas Grenades

How Gas-Powered Airsoft Grenades Work

Gas-powered grenades are among the most common styles of Airsoft explosives. They're loaded with the same compressed air as gas Airsoft guns, which propels BBs forward upon activation.

What Happens When You Arm It

After activating your gas-powered grenade, a pin, spoon, or other arming mechanism primes the internal valve system and prepares it for use.

What Triggers The "Detonation"

Various gas-powered grenade models function differently. Generally, they either detonate after:

• Impact, upon hitting their target with enough force.
• Activation, when you pull the pin or press the lever.

Either way, once the detonation starts, the grenade releases a torrent of gas and BBs around the surrounding area.

How BBs Get Dispersed

As gas escapes the grenade, it expands and accelerates, forcing out the BBs stored inside. This explosive action scatters the BBs far and wide, effectively covering the area where the grenade lands.

Reusable Vs Single-Use Designs

Certain gas-powered Airsoft grenades are refillable. After tossing them, you can simply pick them up, reload them with gas and BBs, and throw them again. Others utilize replaceable shells or changeable internal cartridges, while some are single-use.

Pictured: ASG "FRAG C" Airsoft Impact Sound Grenade

How Sound Grenades Work (And Why They're "Honor System")

Sound grenades don't launch a burst of BBs like other styles of Airsoft explosives. Instead, they detonate with a boisterous bang of up to 120 decibels (dB)—a level louder than many rock concerts.1

How The Bang Is Created

Sound grenades are gas-based. After activation, the gas pressure ruptures an internal chamber or snaps a thin material, creating an audible pop to those around it.

How Hits Are Typically Called

Hits are generally registered based on players' proximity to the grenade. Different venues and leagues enforce varying hit radii, so check with your local arena to see how sound grenades work in your area. Since there's no physical contact with BBs and it can be hard to judge physical distances between players, sound grenades often rely on a self-reporting honor system to record outs.

Why Fields Like Sound Grenades

Sound grenades can clear rooms without the mess of traditional gas-powered Airsoft grenades. Fields prefer this style, as it's less to clean up afterward. BBs also present a slipping hazard on concrete floors and other slick surfaces, especially during Close Quarters Battles (CQBs).

Pictured: KRYTAC TORNADO 3 / Timed Reusable Green Gas Airsoft BB Grenade

How Time-Delay And Impact Grenades Work

Time-delay grenades function most closely to real grenades. After pulling the pin, there's a short break before they go off. Impact grenades, on the other hand, detonate as soon as they make solid contact with a hard surface.

Time-Delay Mechanisms

Different models of time-delay grenades go off after various amounts of time—the delay is dependent on the grenade's manufacturing standards. Certain models offer longer delays, allowing you to cook grenades as you see in war movies.

Impact Mechanisms

Once armed, impact grenades detonate upon hitting a hard surface. Make sure your aim is true with impact grenades—striking a nearby wall or obstacle can cause the BBs to burst, resulting in your and your teammates' elimination.

Primer/Blank-Style Options

Certain Airsoft grenades fire blanks (or primers) to create a loud pop upon detonation. This sound can reach over 150 dB and releases a flurry of BBs—effectively disorienting and eliminating opponents in one go.2 Rules vary from venue to venue on their usage, with many arenas banning them altogether.

Pictured: 6mmProShop GBR Airsoft Mechanical BB Shower Simulation Hand Grenade

How Spring-Powered Grenades Work

Spring-powered grenades are simpler than other styles. They're also usually lower power and accepted more widely at Airsoft arenas.

Loading And Arming

To load spring-powered grenades:

1. Compress the spring.
2. Lock it into place.
3. Load the internal chamber with BBs.

Once they're full of projectiles, spring-powered grenades are ready to launch.

Trigger And Dispersal

Releasing the trigger on a spring-powered grenade decompresses the spring, propelling the BBs forward toward your target.

Tradeoffs

Spring-powered grenades are generally more cost-effective and simpler to use than gas-powered grenades, but they don't create as dramatic a show when they detonate.

Pictured: 6mmProShop 60rd M381 40mm Airsoft Grenade Shell

How Airsoft Grenade Launcher Shells Work

Airsoft grenade launchers mimic real Rocket-Propelled Grenades (RPGs) with a designated, large-caliber gun used to fire a grenade-like barrage of BBs downrange.

What Fires The Shell

The launcher itself activates the grenade's valve, forcefully releasing the gas stored inside.

How BBs Are Dispersed

A quick rush of gas through the grenade launcher's barrel forces BBs onto the battlefield, dispersing them in a wide spread toward your target.

Best Use Cases

Airsoft grenade launchers are best for:

• Clearing crowded doorways
• Flushing foes out of corners
• Taking down a cluster of opponents at short or medium range

When you need a large, lateral blast radius, Airsoft grenade launchers are the tool for the job.

Field Rules: Kill Radius, Hits, And What's Usually Allowed

Any Airsoft grenade's effectiveness depends as much on arena rules as the mechanics of the device. Certain kinds of grenades favor different forms of combat, and local venue rules can weaken (or ban) the potential of specific styles.

Kill Radius Rules

Kill radius rules refer to the amount of distance between a player and a sound grenade (or mine) before they're considered out. Every venue has a different kill radius. If you plan to pack sound grenades, check local regulations before tossing one out.

Direct Hit Rules

Certain fields require scatter grenades and other BB-launching varieties to actually make contact with opponents to get them out. At least one BB from the lot needs to land a direct hit—otherwise, they're safe to keep playing.

Other fields use proximity kills for both sound and scatter grenades. Check your venue's regulations to clarify which ruleset they enforce.

Indoor Vs Outdoor Rule Differences

Venues are free to set their own rules regarding grenades and other Airsoft weaponry, but many enforce similar regulations. Many CQB arenas ban scatter grenades, as they present potential impact and slip hazards.

Outdoor Airsoft fields generally allow a more diverse range of grenade styles, but may require you to use them from a set distance away from your opponents.

Why "Honor System" Matters

You may not see your scatter BBs hit your opponents, or you might not realize they're within your sound grenade's kill radius. In such a situation, the honor system is key to collecting kills. Call yourself out if your opponent lands a fair hit, and expect them to do the same for you.

How To Choose The Right Airsoft Grenade For You

To determine the best kind of Airsoft grenade for your playstyle, consider:

• The venue you play at
• The local rules you follow
• How frequently you want to reload and refill your device

From scatter to sound, every grenade style has an optimal use case.

Choose A BB Scatter Grenade If...

Your field allows the style, and you want physical BB coverage to clear tight spaces.

Choose A Sound Grenade If...

You're a major CQB fan, and your field uses proximity hit rules.

Choose A Spring Grenade If...

You crave a simple, budget-friendly design with fewer usage restrictions.

Choose Launcher Shells If...

You already favor a launcher and want a widespread, flurry effect downrange.

Whether you choose a launcher, sound, spring, or scatter grenade, you want quality, reliability, and power at an accessible price. For the best imitation explosives and Airsoft gear, get top-of-the-line equipment from Evike.com.

Shop Airsoft Grenades & Mines At Evike.com

How do Airsoft grenades work?

It depends on the style. Scatter, spring, and launcher grenades spread BBs over the battlefield, while sound grenades rely on proximity to register opponents out.

When buying Airsoft grenades, consider your field's rules, your playstyle, and your preferences. For all your gameplay needs—from explosives to gas to the best Airsoft guns and more—gear up and unlock your inner grenadier at Evike.com.

Sources:

1. National Hearing Conservation Association. Decibel (Loudness) Comparison Chart. https://www.hearingconservation.org/assets/Decibel.pdf.
2. Applied Acoustics. A comparison of noise produced by blank and live rounds fired from military rifles. https://www.sciencedirect.com/science/article/abs/pii/S0003682X21006939.