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129.00 kr.
  • 1KG Resealable bag
  • High-grade polished BIO tracer BBs
  • 0.28g - Ideal for outdoor skirmishes 

If you're looking for 0.28g BIO BBs for woodland warfare, Delta Armory 0.28g Diamond 6mm BIO BBs are a fine choice. These BBs are supplied in a 1KG resealable bag of approximately 3571 BBs and are high-grade polished BBs to ensure reliable feeding and maximum accuracy potential. 

Being made from biodegradable materials means these BBs are suitable for outdoor skirmishing at any site in the country and great for target shooting in the back garden. 0.28G BBs offer a few benefits compared to lighter weights, including extending range with the correct HOP-up setting, improving wind resistance and increasing foliage penetration potential. If you've got an outdoor skirmish booked, Delta Armory 0.28g Diamond 6mm BIO BBs are the right ammo for the job!

229.00 kr.
  • Tolerance: 5.95mm +/- 0.01mm
  • Green Tracer BBs
  • 0.30g Weight - 2200rnd Bottle

If you are looking for tracer BBs in a heavier weight for use with sniper rifles and upgraded setups NUPROL have what you need! The RZR 0.30g Green Tracer BIO BB has the same ultra-tight +/- 0.01mm tolerances as NUPROL's standard BBs but are green tracer BBs which will glow when fired through an Airsoft tracer unit, helping you instinct aim in close quarters and guide your BBs onto target in a low light outdoors setting. These BBs are also biodegradable which is great news for those of us who skirmish at sites which mandate bio BBs!

149.00 kr.
  • Biodegradable!
  • Heavyweight BBs
  • Compatible with Novritsch ''Full thrust'' platforms


The 0.58g BIO BBs are 6.44mm in diameter, which means they are only compatible with snipers that have been upgraded with the Novritsch ''Full thrust'' kit and also require a Novritsch ''Full thrust'' magazine. The higher surface area of the 6.44mm BBs means the force of the BB when it hits is spread over a bigger area. This results in the 0.58g 6.44mm BB causing no more damage than a standard 6mm BB when shot at equal power and range. These white BBs come in a resealable bottle which contains approximately 420rnds, plenty of ammo to hit those shots from across the battlefield and being white means they can be easily tracked due to their contrast with the colours of mother nature.

The heavier weight of these BBs means they will travel further, provide better accuracy and maintain more stability in the wind. This provides a superior sniping experience and allows you to hit opponents consistently from extremely long distances. These BBs are biodegradable, which is perfect for outdoor skirmishing. What's better than a veteran sniper? An environment-friendly veteran sniper!

159.00 kr.
  • BIO Tracer BBs 
  • 2000rnd Resealable bag
  • 0.30g - Ideal for outdoor skirmishes

If you've got a skirmish at night or dusk in the great outdoors, BLS 0.30g 6mm Perfect BIO Tracer BBs will be an asset. These high-grade BBs are made from biodegradable PLA and glow green when shot through an Airsoft tracer unit. Tolerances are exceptionally tight, boasting only +/- 0.01mm deviation between individual BBs and the surface of each BB is polished to perfection for reliable feeding and maximum accuracy.

Being made from biodegradable materials means these BBs are suitable for outdoor skirmishing at any site in the country and great for guilt-free target shooting in the back garden. Weighing in at 0.3g, these BLS BBs provide improved foliage penetration ability and wind resistance along with extended range in guns with upgraded HOP-ups. If you have a night game in the great outdoors coming up and you run a tracer unit, BLS 0.30g 6mm Perfect BIO Tracer BBs are what you need!

169.00 kr.
  • BIO Tracer BBs 
  • 2000rnd Resealable bag
  • 0.32g - Ideal for upgraded platform

If you've got a skirmish from dusk till dawn in the great outdoors, the BLS 0.32g 6mm Perfect BIO Tracer BBs should be in your magazines! These high-grade BBs are made from a biodegradable polymer and glow green when shot through an Airsoft tracer unit. Their tolerances are exceptionally tight, boasting only +/- 0.01mm deviation between individual BBs and the surface of each BB is polished to perfection for reliable feeding and maximum accuracy. They come in a resealable bag of 2000 BBs, a generous amount considering their quality!

Being made from biodegradable materials means these BBs are suitable for any outdoor skirmishing site in the country and great for guilt-free target shooting in the back garden. Weighing in at 0.32g, these BLS BBs provide improved foliage penetration ability and wind resistance along with extended range in guns with upgraded HOP-ups. If you have a night game in the great outdoors and you want to save the trees, plus, you run a tracer unit, then the BLS 0.32g 6mm Perfect BIO Tracer BBs are for you!

159.00 kr.
  • 0.25g BIO BBs
  • Bottles or Bags
  • ±0.01mm Tolerance

Produced by VORSK Airsoft, these Airsoft BIO BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are BIO 0.25g BBs which are created from biodegradable materials so that they will gradually break down with time when exposed to natural environments. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play.

This weight of BB are designed to work in any Airsoft gun, but perform at their best in beginner and low power Airsoft replicas under 350fps. Whether you're new to Airsoft, playing indoors, or looking for BBs for your Spring Powered Airsoft replica then these are the BBs for you.

149.00 kr.
  • 0.20g BIO BBs
  • Bottles or Bags
  • ±0.01mm Tolerance

Produced by VORSK Airsoft, these Airsoft BIO BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are BIO 0.20g BBs which are created from biodegradable materials so that they will gradually break down with time when exposed to natural environments. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play. 

This weight of BB are designed to work in any Airsoft gun, but perform at their best in beginner and low power Airsoft replicas under 350fps. Whether you're new to Airsoft, playing indoors, or looking for BBs for your Spring Powered Airsoft replica then these are the BBs for you. 

169.00 kr.
  • 0.28g BIO BBs
  • Bottles or Bags
  • ±0.01mm Tolerance

Produced by VORSK Airsoft, these Airsoft BIO BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are BIO 0.28g BBs which are created from biodegradable materials so that they will gradually break down with time when exposed to natural environments. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play. 

This weight of BBs is specifically designed with a higher weight to allow it to punch through light wind and bushes with ease, allowing you to be more effective in outdoor games. These  BBs perform best when used in Airsoft guns between 300fps - 400fps, and are great in replicas which have had upgrades or come with an extremely good hop out of the box. 

189.00 kr.
  • 0.30g BIO BBs
  • Bottles or Bags
  • ±0.01mm Tolerance

Produced by VORSK Airsoft, these Airsoft BIO BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are BIO 0.30g BBs which are created from biodegradable materials so that they will gradually break down with time when exposed to natural environments. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play. 

This weight of BB (0.30g) is right on the overlap of Assault Rifle / Sniper Rifle gameplay, and can realistically be used for either application. If you want the ability to cut through trees/leaves/branches with less deflections, or if you play at a windy site where standard BBs won't cut it, then the 0.30g is an ideal weight.

229.00 kr.
  • Tolerance: 5.95mm +/- 0.01mm
  • Biodegradable BBs
  • 0.25g Weight - 2200 or 6000rnd options

If you are looking for biodegradable BBs for use in both CQB skirmishes and out in the glorious woods, NUPROL have just the thing! The RZR 0.25g Precision BIO BB has the same ultra-tight +/- 0.01mm tolerances as NUPROL's standard BBs but are constructed from a biodegradable polymer, meaning they will be allowed on even the strictest Airsoft sites and no need to worry about cleaning up after shooting!

89.00 kr.
  • ±0.01mm Tolerance
  • Range of Bottle Sizes
  • Heavyweight BIO BBs

Produced by VORSK Airsoft, these Airsoft BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are BIO 0.40g BBs which are created from biodegradable materials so that they will gradually break down with time when exposed to natural environments. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play. 

These 0.40g BBs are getting towards the upper limit of Heavyweight BBs, and are ideally suited for Sniper Rifles and other high-power Airsoft Guns such as DMRs and Pistols (provided they have been suitably upgraded with an aftermarket HOP Bucking).

179.00 kr.
  • ±0.01mm Tolerance
  • Range of Bottle Sizes
  • Heavyweight BIO BBs

Produced by VORSK Airsoft, these Airsoft BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are BIO 0.40g BBs which are created from biodegradable materials so that they will gradually break down with time when exposed to natural environments. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play. 

These 0.40g BBs are getting towards the upper limit of Heavyweight BBs, and are ideally suited for Sniper Rifles and other high-power Airsoft Guns such as DMRs and Pistols (provided they have been suitably upgraded with an aftermarket HOP Bucking).

229.00 kr.
  • Green Tracer BBs
  • Biodegradable BBs
  • 0.25g Tracer BIO BBs

Produced by VORSK Airsoft, these Airsoft Tracer BIO BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are not only BIO BBs, but are also Tracer BBs. These BBs are created with two purposes in mind, being created from biodegradable materials so that they will gradually break down with time when exposed to natural environments as well as being infused with special materials to allow them to glow in the dark. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play.

These particular BBs are standard 0.25g BBs which are designed to work in any Airsoft gun, performing best in Airsoft guns which fire between 280fps - 370fps, and are the go-to weight for any Airsoft skirmisher looking for an the perfect all around weight for a standard AEG. Whether you're new to Airsoft, or a regular skirmisher, this weight of BB will most likely be your go-to BB weight, and is the most commonly used by Airsoft players.

89.00 kr.
  • ±0.01mm Tolerance
  • Range of Bottle Sizes
  • Heavyweight BIO BBs

Produced by VORSK Airsoft, these Airsoft BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are BIO 0.43g BBs which are created from biodegradable materials so that they will gradually break down with time when exposed to natural environments. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play. 

These 0.43g BBs are well within the bracket of Heavyweight BBs, and are ideally suited for Sniper Rifles and other high-power Airsoft Guns such as DMRs and Pistols (provided they have been suitably upgraded with an aftermarket HOP Bucking). If you need more poke from your replica and you have a HOP Bucking that can take it, then 0.43g BBs are a welcome 'upgrade' to your shooting experience.

229.00 kr.
  • ±0.01mm Tolerance
  • Range of Bottle Sizes
  • Heavyweight BIO BBs

Produced by VORSK Airsoft, these Airsoft BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are BIO 0.43g BBs which are created from biodegradable materials so that they will gradually break down with time when exposed to natural environments. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play. 

These 0.43g BBs are well within the bracket of Heavyweight BBs, and are ideally suited for Sniper Rifles and other high-power Airsoft Guns such as DMRs and Pistols (provided they have been suitably upgraded with an aftermarket HOP Bucking). If you need more poke from your replica and you have a HOP Bucking that can take it, then 0.43g BBs are a welcome 'upgrade' to your shooting experience.

39.00 kr.
  • 0.20g Bio BBs
  • 2000rnd Resealable bag
  • Green tinted

If you like to plink in the garden but don't like piles of white plastic on the lawn, these BBs are what you need! The 0.20g BIOTAC BBs from PJ are made from biodegradable material so they won't stick around for long after they've been shot. These BBs are also green in colour so they won't run the aesthetics of your well-kept garden and the enemy team won't be able to track your position as easily in a skirmish environment. 

The BIOTAC BBs are packaged in resealable bags of 2000 rounds, and being 0.20g in weight, are ideal for close to medium-range target shooting and skirmishing in stock AEGs, shotguns and pistols. 

229.00 kr.
  • Green Tracer BBs
  • Biodegradable BBs
  • 0.20g Tracer BIO BBs

Produced by VORSK Airsoft, these Airsoft Tracer BIO BBs are precision engineered 6mm BBs which are designed to be used in a wide range of Airsoft guns and replicas. These BBs are part of the VORSKs brand new range of Airsoft BBs ranging from light weight BBs for beginner Airsoft players, all the way up to super heavyweight BBs for professional players and snipers.

These particular BBs are not only BIO BBs, but are also Tracer BBs. These BBs are created with two purposes in mind, being created from biodegradable materials so that they will gradually break down with time when exposed to natural environments as well as being infused with special materials to allow them to glow in the dark. Touted as a more environmentally friendly BB, they are sometimes required by certain Airsoft sites to play.

This weight of BB are designed to work in any Airsoft gun, but perform at their best in beginner and low power Airsoft replicas under 350fps. Whether you're new to Airsoft, playing indoors, or looking for BBs for your Spring Powered Airsoft replica then these are the BBs for you. 

169.00 kr.
  • 1KG Resealable Bag
  • High-grade BIO BBs - Made from PLA
  • 0.32g - Ideal for long-range focussed platforms

If you've built yourself a beast of a DMR but you're limited to biodegradable BBs, BLS 0.32g 6mm Perfect BIO BB; 1kg Bag is what you need to get the job done. These bio BBs are made from cornstarch-based PLA polymer, meaning you can magdump guilt-free in the great outdoors. 

The surface of each BB is highly polished and tolerances are very tight, as we would expect from BLS, guaranteeing you can make the most of your upgraded primary regardless of the local sites' BB-type mandate. Each 1kg resealable bag contains approximately 3125 BBs and being 0.32g in weight, these are well suited to high FPS primaries and those with upgraded HOP-up units. 

169.00 kr.
  • Tolerance: 5.95mm +/- 0.01mm
  • Green Tracer Bio BBs
  • 0.25g Weight - 2200rnd bottle or 6000rnd bag

If you are looking for tracer BBs in the go-to skirmishing weight, 0.25g, NUPROL have what you need! The RZR 0.25g Green Tracer BIO BB has the same ultra-tight +/- 0.01mm tolerances as NUPROL's standard BBs but are green tracer BBs which will glow when fired through an Airsoft tracer unit, helping you instinct aim in close quarters and guide your BBs onto target in low light settings. 

409.00 kr.
  • Tolerance: 5.95mm +/- 0.01mm
  • Green Tracer Bio BBs
  • 0.25g Weight - 2200rnd bottle or 6000rnd bag

If you are looking for tracer BBs in the go-to skirmishing weight, 0.25g, NUPROL have what you need! The RZR 0.25g Green Tracer BIO BB has the same ultra-tight +/- 0.01mm tolerances as NUPROL's standard BBs but are green tracer BBs which will glow when fired through an Airsoft tracer unit, helping you instinct aim in close quarters and guide your BBs onto target in low light settings. 

299.00 kr.
  • 1KG Resealable bag
  • Contains approx. 2500 BBs
  • 0.40g BIO BBs - Great for sniper rifles

If you're after heavy BBs but need them biodegradable, Delta Armory 0.40g Diamond 6mm BIO BBs are ideal. These 0.40g BBs are finely polished, with minimal tolerances of +/- 0.01mm and weight difference not exceeding 0.01g between BBs. Being made from biodegradable materials means these BBs are welcome at every outdoor skirmish site in the country and their hefty weight makes them perfect for sniper rifles, DMRs and setups with upgraded HOP-up parts.

Supplied in a resealable 1KG bag containing approximately 2500 BBs, Diamond BBs are what you need if you're after a fantastic combination of affordability and quality, allowing your setup to perform at its best without breaking the bank!

199.00 kr.
  • 1000rnd Resealable bag
  • 0.45g BBs - For sniper rifles
  • Biodegradable - Great for outdoors

If you need high-performance, high-accuracy BBs for your Airsoft Sniper Rifle then look no further! The BLS 0.45g 6mm Perfect BIO BBs come in a resealable bag of approximately 1000 BBs.

The BLS 0.45g 6mm Perfect BIO BBs measure 5.95mm in diameter with a tolerance of +/- 0.01mm, making them a great choice to provide the necessary accuracy, consistency and wind resistance for upgraded sniper rifles. You are what you eat, and the same is true for your Airsoft gun. To get the most out of features such as adjustable HOP-up units and tightbore inner barrels, high quality ammo is an absolute must!

These BBs are approximately 0.45g in weight, making them well suited to outdoor gameplay and guns with upgraded HOP-up units as they are less affected by the wind and can cut through foliage more effectively without losing too much energy. Being 5.95mm +/- 0.01mm makes them equally useful for tightbore barrel setups, guaranteeing smooth feeding with every shot. If you have tried 0.30g, 0.32g and 0.36g and your HOP-up still has more to give, these BBs are the perfect choice!

119.00 kr.
  • Biodegradable BBs - Great for outdoors
  • 0.28g Weight - Suitable for most AEGs
  • Ideal for upgraded HOP-ups

If you've treated yourself to a Novritsch AEG or GBBR, treat it to some of these! The Novritsch 0.28g BIO BBs are high-grade biodegradable BBs ideal for outdoor skirmishes and platforms with upgraded HOP-up parts. These BBs are supplied in a resealable bag of approximately 2500 BBs, plenty to keep you going!

The extra weight of 0.28g BBs lets them punch through foliage more effectively and resist wind for better accuracy at long range, essential for AEGs with upgraded HOP-up units, including Novritsch platforms! If you need high-grade biodegradable 0.28g BBs, these are some of the best around!

179.00 kr.
  • Resealable bag - Approx. 1000 BBs
  • High-grade polish
  • 0.43g - Ideal for sniper rifles

If you're seeking sniper rifle ammo with a heavy weight and tight tolerances made from biodegradable materials,  BLS 0.43g 6mm Perfect BIO BBs are an excellent choice! These 0.43g sniper BBs boast a highly polished surface for smooth feeding and maximum accuracy, made even better with ultra-tight tolerances of only +/- 0.01 and weight differences not exceeding 0.01g between individual BBs. 

Being made from biodegradable polymer makes these BBs ideal for outdoor skirmishes and backyard shooting, minimising cleanup and keeping the skirmish site happy and healthy. If your site is strict about bio BBs and you want to maintain your sniper rifle's superb accuracy, BLS 0.43g 6mm Perfect BIO BBs are what you're looking for!

129.00 kr.
  • 530rnd Resealable Bottle
  • 0.40g 6mm BBs - Ideal for sniper rifles
  • Biodegradable BBs - Perfect for outdoor skirmishing

If you're running an upgraded Sniper Rifle or one of Novritsch's fantastic pre-upgraded platforms, the Novritsch 0.40g 6mm Sniper BIO BBs will help you get the most out of your setup. Supplied in a speedloader-friendly resealable bottle of 530 rounds with an O-ring sealed top, even the bottle of these BBs is designed to give you the best possible accuracy by keeping dirt and debris out and your BBs clean and ready (even as you are clean and ready!). 

Ideal for platforms with upgraded HOP-up parts like the SSG96, SSG10 series and SSR63 A3, Novritsch's BBs boast tight tolerances and a finely polished surface for maximum accuracy. These are the biodegradable version, perfect for strict skirmish sites and guilt-free sniping. Feed your sniper rifle with the ammo it deserves!

169.00 kr.
  • Biodegradable
  • 1kg Resealable Bag
  • 5.95mm +/- 0.01mm

A 1KG bag containing approximately 4000 high quality biodegradable competition grade Airsoft BBs, constructed from Polylactide (PLA) which degrades in around 60 days, and are polished to provide a smoother aerodynamically enhanced external surface. 

259.00 kr.
  • 1KG Resealable bag
  • Contains approx. 2777 BBs
  • 0.36g BIO BBs - Ideal for DMRs & sniper rifles

If you're an outdoor skirmisher with a long-range-focussed setup, Delta Armory 0.36g Diamond 6mm BIO BBs are what you need to feed it! These finely polished Airsoft BBs are constructed from a biodegradable polymer and flawlessly polished for maximum accuracy and reliable feeding. Being 0.36g in weight, these BBs are best used with rifles with upgraded HOP-up parts, DMRs and sniper rifles. 

Supplied in a resealable bag containing approximately 2777 BBs, these bio BBs have uncompromisingly tight tolerances of +/- 0.01mm with a guaranteed weight difference not exceeding 0.01g. If you need a bio BB with the perfect combination of heavyweight, affordable price and tight tolerances, Delta Armory's 0.36g Diamond 6mm BIO BBs are exactly that!

Whether your skirmish site only allows bio BBs or if you’re just looking to make an eco-friendly switch, we have a great range of suitable options for you. Plus, plenty of our bio BBs are available as a bulk purchase, so you can buy more and save. 

At Patrol Base you’ll only find the highest quality bio BB manufacturers including Ares, G&G and more. We know everyone's needs are different too, which is why we offer a variety of BB weights and amounts, with up to 5,200 bio BB bottles and bags available. 

Shop online and enjoy next day delivery options or visit us at our Huddersfield location where you can take a look at our in-store biodegradable BB collection.