Brothers In Arms Kalashnikov AK74 Semi-Auto 4.5mm BB CO2 Replica Air Rifle
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If you want something that looks and feels like it walked straight out of a Cold War newsreel, the Brothers In Arms AK74 replica is about as close as you’ll get without having to explain yourself to a licensing department. This is the semi-auto CO2 version of the iconic AK74, complete with the classic wooden furniture, full-size proportions and enough heft to remind you that yes, real rifles from the 70s were built like farm tools and expected to survive being dropped out of trucks.
The real AK74 saw combat for the first time during the Soviet invasion of Afghanistan in 1979, eventually spreading across former Soviet and Eastern Bloc forces. Millions were produced and the rifle became one of the most recognisable firearms on the planet. This replica keeps the spirit of that design intact. The wood is intentionally rough, the finish marks with use, and it absolutely does not look like something polished for a glass cabinet. If you want museum gloss, this won’t be your soulmate. If you want authenticity, you’re in the right postcode.
Powered by a single 12 gram CO2 capsule, you can expect roughly 20 or so shots at around 400 fps. It weighs a touch over 3 kg, the magazine holds 18 steel BBs and the overall handling is surprisingly faithful to the original. For collectors, reenactors or anyone wanting a proper Cold War conversation piece, it’s a solid shout. It also makes a very convincing wall hanger, assuming your wall fixings can handle the weight.
Specifications
Action: Semi-auto CO2
Calibre: 4.5 mm steel BB
Power source: 1 × 12 g CO2 capsule
Shot count: Around 20 shots per capsule
Magazine capacity: 18 BBs
Velocity: Approximately 400 fps
Stock: Wood (intentionally rough like period originals)
Weight: Just over 3 kg
Finish notes: Marks and wears like a real AK from the era by design
Important — read before purchase or storage.
All CO2 and green‑gas/propane powered guns and magazines are pressure systems and must not be stored pressurised for any length of time outside active shooting. Leaving gas installed will compress internal seals, accelerate permanent leaks, and shorten the life of your gun.
Temperature & Pressure Behaviour
CO2 and propane are temperature‑sensitive: they expand and contract with temperature changes. That expansion can force gas past worn seals or, in extreme heat, rupture seals or valves — creating dangerous failures. Keep guns and magazines out of direct sunlight and away from heat sources. Cold temperatures reduce pressure and can cause low power or feed problems, so always test a gas gun in the conditions you intend to use it.Always remove or fully vent gas after use. If you’re not shooting, remove the CO2 capsule or vent/empty magazines. Do not store with gas installed.
Lubrication Recommendations
To protect internals and seals we recommend using gas with added lubricants:-
CO2: use lubricated CO2 capsules — UMAREX branded CO2 is our recommendation.
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Green Gas / Propane: use gas with added lubricant such as Vorsk, UltraAir, Nuprol, or Abbey (Green Gas).
Seal & Lubricant Guidance
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Apply one drop of silicone oil (for polyurethane seals only — usually green or clear seals) to the tip of every 5 CO2 capsules or before long‑term storage to lubricate the piercing nozzle and protect seals.
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For silicone seals (typically semi‑translucent white), only use PTFE‑based lubricants (e.g. Super Lube PTFE). Do not use silicone oil on silicone seals.
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Never use gas cartridges showing rust or visible corrosion.
Leak Expectations & User Responsibility
All gas systems will slowly leak over time. Proper care reduces the rate of leakage but cannot prevent it entirely. Leaving cartridges installed dramatically speeds up seal wear. By using or storing gas guns you accept responsibility for regular maintenance, correct lubricant use, and safe storage.We Test Before Sale
We test every gas‑powered gun prior to dispatch or handover for major leaks and function. This may mean the gun arrives with gas installed — you may choose to use this free gas or vent the gun before storage. Testing does not guarantee seal life or prevent future leaks; seals remain consumable parts.If you’re unsure about seal types, lubricant compatibility, or safe storage, ask us before purchase — we’ll give honest guidance. Failure to follow these recommendations may void warranty or return eligibility where damage is caused by improper storage or lubrication.
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