WE Co2 Hi Capa 5.1 Magazine

£44.95

High 31-round capacity for extended play
Runs on a single 12g CO2 cartridge for strong recoil
Full metal shell with polymer internals
Fits WE Hi-Capa 5.1, 3.8 and 7.1 CO2 pistols
Allen key included for CO2 cartridge loading
Consistent gas output for crisp blowback

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Description
Specification

High-capacity CO2 power

This WE spare magazine is built for the popular Hi-Capa 5.1 platform and holds an impressive 31 rounds of 6mm BB. Powered by a single 12g CO2 cartridge, it delivers strong, consistent blowback and a snappy recoil impulse that CO2 fans love, with dependable performance even when temperatures drop.

Built for the Hi-Capa family

As well as the Hi-Capa 5.1, this magazine is listed as compatible with the WE Hi-Capa 3.8 and 7.1 CO2 GBB pistols that share the same magazine design. That makes it a handy spare if you run more than one Hi-Capa in your collection.

Metal build with easy loading

A full metal shell with polymer internals keeps the magazine tough enough for regular skirmish use. An Allen key is included to seat the CO2 cartridge, and a speed loader makes topping up the 31 BBs fast between games.

Get game-ready

Keep a spare charged and grab your BBs, gas and batteries before your next game so you never run dry mid-skirmish.

Bought from the specialists: our in-house workshop in Rochester, Kent can service, repair and upgrade your kit. See our airsoft gun repair and servicing.

Product information reviewed by James Smith. Every gun is checked & serviced by our Rochester workshop before dispatch.

General
Brand	WE Airsoft
Colour	Black
Platform	Hi-Capa 5.1
Build & furniture
Construction	Metal with polymer parts
Dimensions
Weight	Approx 330g to 350g
Other
Type	CO2 blowback pistol magazine
Capacity	31 rounds
Calibre	6mm BB
Fits	WE Hi-Capa 5.1, 3.8 and 7.1 CO2 GBB pistols
Power source	12g CO2 cartridge
BB fill	Top loading via speed loader
CO2 loading	Allen key included

Recommended upgrades & accessories

Frequently asked questions

Which pistols does this fit?

It is developed for the WE Hi-Capa 5.1 CO2 GBB pistol and is also listed as compatible with the WE Hi-Capa 3.8 and 7.1 CO2 models that share the same magazine platform.

How many rounds does it hold?

It holds 31 rounds of 6mm BB. This high capacity means longer periods on the field before you need to stop and reload BBs.

What power source does it use?

It runs on a single 12g CO2 cartridge, which gives strong, snappy blowback and stable performance in cooler weather compared with green gas.

Do I need any tools?

An Allen key is included to seat and pierce the 12g CO2 cartridge in the base. A speed loader makes filling the 31 BBs quick and easy.

Is CO2 harder on the pistol?

CO2 runs at higher pressure than green gas, so make sure your Hi-Capa is a CO2-rated model. Lubricate seals regularly and remove spent cartridges after use.

WE Co2 Hi Capa 5.1 Magazine