Rare Arms M4/AR15 Co2 Blowback Shell Ejecting Rifle (10.3 inch - CNC/Metal)

For collectors, tactical trainers, and film armory masters who demand uncompromising firearm replication beyond standard gas blowback systems, the Rare Arms M4/AR15 10.3-Inch Shell Ejecting CO2 GBB Carbine stands in a class of its own. Utilizing a proprietary shell-ejection gas-operated design, every shot cycles the heavy steel bolt carrier rearward, flings a spent aluminum shell casing dramatically through the ejection port, and strips a fresh cartridge off the magazine into the chamber.

Precision CNC Machining & High-End Structural Metallurgy

Built to genuine mil-spec dimensional standards, the rifle features upper and lower receivers CNC-machined from aircraft-grade 6061-T6 aluminum billet, treated with a hard-anodized matte black finish for authentic scratch resistance. The 10.3-inch CQB-profile outer barrel is topped with a standard 14mm CCW birdcage flash hider and free-floated inside a lightweight modular tactical handguard with a continuous 20mm top Picatinny rail. Inside the receiver sits a heavy-weight CNC-machined steel bolt carrier group, steel fire-control components, and a functional forward assist, delivering an authoritative metallic recoil clack and realistic trigger reset with every cycle.

Self-Contained Stock-Tube CO2 Power & Shell-Ejecting Mechanics

Unlike legacy shell-ejecting systems requiring gas reservoirs inside delicate cartridges, Rare Arms houses a standard 12g CO2 capsule directly inside the buffer tube. The magazine holds 30 reusable aluminum cartridge cases, each holding a single 6mm BB in a front silicone ring. When fired, the internal gas piston expands to discharge the projectile down the inner barrel while using the remaining pneumatic volume to drive the bolt backward. The mechanical extractor hooks the casing rim and flings it free via the spring-loaded ejector plunger, faithfully reproducing authentic extraction, chambering, and malfunction-clearing drills (such as stovepipes and double-feeds).

Practical Applications & Real-World Use Cases

• Law Enforcement & Tactical Muscle-Memory Training: Provides realistic manual-of-arms repetitions, emergency magazine reloads, and jam-clearing exercises with zero live-fire hazard.

• Cinematic Armory & Prop Productions: Ideal for film sets, commercials, and theatrical action scenes where practical shell ejection is required without the permits or risks of blank-firing firearms.

• Elite Collecting & Range Demonstration: The ultimate interactive showpiece for firearms enthusiasts who appreciate precision mechanical clockwork and realistic shell-ejecting action.

Compatibility

Feeds from Rare Arms shell-ejecting 30-round metal magazines. Uses Rare Arms reusable aluminum 6mm shell casings. Powered by standard 12g unthreaded CO2 capsules inserted into the buffer tube.