An M4 replica that runs on CO2
The Air Venturi HellBoy is a full-metal .177 (4.5mm) steel BB air rifle styled on the iconic M4 carbine. Powered by a single 12g CO2 capsule, it delivers semi-automatic shots at up to 495 fps for realistic tactical plinking.
Built like the real thing
The receiver, barrel and 18-round magazine are all metal, with polymer used only on the retractable stock, pistol grip and handguard. Pull the charging handle and the dust cover opens just like the genuine article, though the action is non-blowback for reliable, efficient shooting.
Set up your way
A removable carry handle sits on a Weaver/Picatinny rail for optics, and the flip-up rear sight adjusts for windage and elevation. The adjustable stock sets your length of pull, and integrated sling mounts finish the package.
Ammo and accessories
It uses 4.5mm steel BBs and 12g CO2 capsules, both found in our BBs, gas and batteries section. Browse more in our outdoor shooting range.
Legal to buy at 18 or over
As a CO2 steel-BB air rifle it needs no licence in England and Wales, but you must be 18 or over to purchase.
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.
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