Hellboy M4 .177 Co2 Magazine

Genuine SMK Hellboy spare magazine

This is a factory spare magazine for the SMK Hellboy M4 .177 CO2 BB air rifle. Having a second magazine ready means less downtime at the range, so you can keep shooting while one magazine cools or is being reloaded.

CO2 powered BB feed

The magazine houses a single 12g CO2 capsule and holds up to 18 steel .177 (4.5mm) BBs. Nearly all of the working parts, including the valve, sit inside the magazine itself, which is why a spare effectively refreshes the heart of the rifle.

Full metal construction

Built from metal to match the Hellboy’s full-metal receiver and barrel, the magazine is designed to take the knocks of regular plinking and target work. A piercing screw seats and taps the CO2 capsule ready for firing.

Stock up on consumables

Pair your spare magazine with fresh CO2 and steel BBs so you never run dry mid-session. Find capsules and ammo in our BBs, gas and batteries section.

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.