Derya Arms DY12 12 Gauge 21-Round Extended High-Capacity Hybrid Steel and Polymer Shotgun Drum Magazine D055039
Product Description
Deploying box-magazine-fed semi-automatic shotguns in competitive match circuits or high-volume tactical courses frequently exposes an acute operational bottleneck of limited shell capacity and high-volume recycling drag. Standard single-stack stick magazines for 12-gauge platforms typically top out at 5 or 10 rounds; attempting to extend past those limits results in an excessively long, unwieldy, and unbalanced structural stick profile that acts as an extreme vertical snag hazard and places massive rotational stress on the receiver's magazine catch. The Derya DY12 21-Round Drum Magazine overrides these physical handling limits, moving an extended ammunition payload into a centralized, low-profile radial framework that preserves the weapon's natural point of balance.
The structural foundation of this high-capacity feeding asset utilizes a state-of-the-art hybrid material matrix, combining the structural rigidity of a hardened carbon steel internal feed tower and tracking spine with a lightweight, shock-absorbing high-impact injection polymer drum body shell. This hybrid composition allows the assembly to easily shrug off severe drop impacts, concrete bumps, and heavy bolt-carrier reciprocating vibrations without expanding or losing its external geometric form factor. Inside the drum housing, a heavy-duty, high-fatigue steel wire coil spring drives a self-lubricating, controlled anti-tilt polymer follower, ensuring smooth linear tracking and positive vertical cartridge alignment of your 12-gauge payloads.
Executing an optimized, direct-interfacing installation geometry, this magazine relies on the universal MKA 1919 / AR-12 pattern, ensuring flawless cross-compatibility across a broad array of elite magazine-fed shotguns. To alleviate the intense physical spring resistance common to manual drum indexing, the outer shell is equipped with an integrated thumb-assisted mechanical winding lever mechanism, enabling operators to depress tension step-by-step for fast, fatigue-free reloads under field pressure. Delivering an unyielding structural fit that locks flush inside the mag throat, this design secures absolute physical and technical consistency under continuous, rapid-fire operational cycles.
Each individual factory package contains one genuine Derya Arms DY12 12-Gauge 21-Round Drum Magazine finished in matte black with an integrated manual winding assist wheel mechanism.
*Administrative Armorer Staging, Shotgun Magazine Capacity Compliance Guidance: This high-capacity 21-round feeding asset operates under strict localized Jurisdictional Restriction Blocks and cannot be processed, shipped, or routed to civilian operators residing within the states of California, Colorado, Connecticut, Delaware, Hawaii, Illinois, Maryland, Massachusetts, New Jersey, New York, Rhode Island, Vermont, Washington, or the district of Washington D.C. Armorers must note that this drum is dimensioned and calibrated to cycle standard 2.75-inch (70mm) 12-gauge shotshells exclusively (including slugs, buckshot, or high-velocity heavy birdshot loads). Do not attempt to load 3-inch or 3.5-inch magnum shells into the drum cavity, as alternative shell lengths will induce immediate internal mechanical binding and crush the winding wheel gear tracks. For routine workbench detailing, clean the interior tracks using dry compressed air to clear unburnt powder grains and plastic hull shaving scales; avoid flooding the internal polymer housing with wet petroleum lubricants, which attract fouling slurry and slow down the follower's vertical tracking velocity.
Key Features
- 21-Round High-Volume Capacity: Massively expands onboard shotgun capacity to allow continuous, uninterrupted shooting strings during 3-Gun matches or tactical stages.
- Steel-Polymer Hybrid Matrix: Blends the structural rigidity of a hardened steel feed tower with a lightweight, high-impact polymer drum body to survive heavy recoil forces.
- Universal AR-12 Pattern Compatibility: Flawlessly locks into an array of popular box-magazine-fed semi-automatic 12-gauge shotguns including the VR80, MKA1919, and F12.
- Mechanical Winding Assist Wheel: Features a convenient external thumb leverage system to depress spring compression manually, ensuring fatigue-free hand loading cycles.
- Self-Lubricating Anti-Tilt Follower: Promotes smooth, direct vertical cartridge presentation to prevent nose-diving and hull distortion under rapid-fire gas cycling.
- Sleek Non-Reflective Black Profile: Low-profile radial layout centers the magazine weight directly beneath the receiver to optimize weapon balance and minimize snag vectors.
Product Specifications
- Brand: Derya Arms
- Product Line: DY12 Drum Series
- MPN/SKU: D055039
- UPC Barcode: 850067243151
- Chassis Metallurgy: Hardened Carbon Steel Feed Tower Components / Premium High-Impact Technical Polymer Drum Housing
- Coating Finishing: Non-Reflective Matte Textured Black Shell Shielding
- Operational Dimensions: 12 Gauge Caliber / 21-Round High-Capacity Matrix / Formatted Exclusively for 2.75" Shotshells
- Packing Metrics: 1 Complete 21-Round Assembly Unit Wrapped Securely in Factory Protective Packaging Box
COMPATABILITY
- Derya Arms DY12
- Many other similar patterned magazine fed Shotguns (Charles Daly, EAA MKA 1919, SDS Radikal, Rock Island VR80, Panzer Arms BP12, X12/F12, Boss, etc...)
