DIANA Two-Forty Air Gun Rifle .177 cal 4.5mm / 75 Joule

The DIANA Two-Forty Air Gun Rifle .177 cal 4.5mm / 75 Joule is a precision break-barrel air rifle built for shooters who demand accuracy without the report of conventional firearms. Designed by BLS Supply's Blue Line division, this platform serves recreational shooters, target competitors, and precision-focused enthusiasts who require sub-sonic performance and quiet operation. The .177 caliber format delivers consistent velocity and minimal noise signature—critical factors for field work, training, and pest control applications where stealth and shot placement matter equally.

At 75 joules of muzzle energy, the DIANA Two-Forty generates sufficient velocity for effective mid-range shooting while maintaining manageable recoil and exceptional shot-to-shot consistency. The .177 / 4.5mm pellet format is the industry standard for pneumatic air rifles, offering ballistic predictability and a broad aftermarket support ecosystem. The rifle's break-barrel design—a proven mechanical system—allows for rapid cocking and reliable pellet feeding without reliance on pump or CO₂ charging, making field deployment straightforward and maintenance-light. At 6.8 lbs, the platform balances portability with stability, enabling extended shooting sessions without fatigue.

This air rifle excels for shooters transitioning from centerfire systems who seek to develop trigger control and sight picture without recoil signature or ammunition cost overhead. Law enforcement and military personnel use air rifles for zero confirmation, low-light familiarization, and marksmanship sustainment training. The 44.8-inch overall length provides sight radius sufficient for iron or optical sighting while remaining compact for transportation and use in confined spaces. Compatibility with standard .177 pellet ammunition—available across retail and tactical supply channels—ensures long-term operational sustainability and training flexibility.