Beta Project 30rd M4 Lo Cap (Dark Earth) Box of 5

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Beta Project 30rd M4 Lo Cap (Dark Earth) Box of 5

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Beta Project 30 round M4 Lo cap which has no wind-up mechanism and no rattling BB's! they are Marui compatible so will fit in 99% of AEG's. And the best bit is they are well under £5 each! This excellent value mid-cap is reverse loaded through the BB outlet port with a speed-loader or loading tube. The BB's are therefore all spring loaded inside the magazine so they cannot rattle when you are running around with a pile of these as spares in your vest or pouches. The base plate on the bottom of the magazine also accepts the Magpul Ranger Plate quick release loop. Beta Project M4 Lo cap ABS plastic magazine that holds... yep, 30 rounds of 6mm BB's.
Weight (Kg) 0.6500
Manufacturer Beta Project
Beta Project 30rd M4 Lo Cap (Dark Earth) Box of 5
Excellent value for money
Review by
I bought these for my m4 as a substitute to the rattling off bb's in my high cap. I loaded them in the gun dropped them from a crouched position to test the strength of them as if I was on the field and they can withstand quite a bit. I'll definitely be ordering more for the price and the quality.
Beta Project 30rd M4 Lo Cap (Dark Earth) Box of 5
oh dear.
Review by
I bought these for my mil-sim loadout, and they look great, don't get me wrong, but they don't have the quality. I oiled up my mags, broke the spring down, took it to a skirmish, they were fine for the first game, then a mag jammed, then another mag jammed. They're just stuck, they won't spring back up to it's normal place.
Probably just my mags. Oh well.

AW: Hi Elliot, sorry to hear your having a problem, can you please get in contact with us regarding your mags, by either calling us on 0845 86 20 704 or logging into your account and opening up a support ticket.
Beta Project 30rd M4 Lo Cap (Dark Earth) Box of 5
Good only flaw slight miss fight in G&G combat machine
Review by
Good mags. Sturdy. Perfect for mill sims or if you don't want the rustle of loose bbs in a high cap mag. Quality build they have been dropped plenty of times during tactical reloads and not one has failed. Only problem is that when the mags are in my G&G combat machine I have to push the mags forward so that they engage and allow the bbs through. Although this has been repaired with a little electrical tape and no-one can confuse my mags with theirs now. Colour goes perfect with the multicam.
Important Information


All images, product contents and specifications listed are based on checks performed when a product is first listed and may differ due to changes over time made by the manufacturer. This includes package contents in regards to any 'extras' provided e.g. Sample BBs.

Items used in images to promote the main item (Holsters, Camo, etc) are not supplied unless listed in the Specification tab under 'Extras'. This includes attached rails, grips, scopes, suppressors etc. If no extras are listed, please assume none are supplied.

Unless otherwise stated in the Specification tab, Battery and Chargers are not suppplied.

Where supplied, Chinese batteries and chargers are warrantied to be not DOA (Dead on Arrival) only. We always recommend swapping out to a better quality battery and charger at the earliest opportunity.

Custom Painted products (Two-Tone) are non-refundable as these are painted to order. 

Unless otherwise stated, all products are sold singly.



Any figures used are based on tests performed on the products when they are first listed. These can vary due to changes by the manufacturer, gas pressure, gas used and a number of other factors. All figures should be treated as an approximate guide and used for reference only. 

All listed FPS are +/- 5% due to differences from rifle to rifle. If you require a guaranteed FPS, please add an upgrade/downgrade option on to your product (this may cost extra).

No airsoft AEG is warrantied for use with an 11.1v LiPo or higher voltage battery at UK velocities (373fps or lower) unless specifically recommended on the product itself. Use of higher voltage batteries can cause failures and will negate any warranty implied or otherwise.


Wearable Items

We cannot offer a refund or exchange on articles bought and worn skirmishing that you subsequently feel aren't suitable. If in doubt, try the kit on in your house BEFORE you play as soiled items will not be refunded for this reason. Clothing worn next to the skin (Long Johns, Socks etc) cannot be returned for refund if worn at all. For sizing, simply place them next to you before physically putting them on. Would you like to wear someone elses soiled socks?


We cannot offer an exchange on pyrotechnic devices due to device failure or items that have been stored for long periods of time. We are unable to guarantee that the pyrotechnic device has been stored in a moisture free environment or used correctly in accordance with the manufacturers guidelines.

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