Mossberg Factory OEM 590M Series Detachable Magazine - 15-Round Capacity - Fits 590M Mag-Fed Shotguns - 12 Gauge, 2.75" Shells, Carbon-Fiber Reinforced Polymer, Matte Black Finish - Item 95139
Product Description
If you are pushing your mag-fed pump shotgun through intense home-defense scenarios or heavy dynamic training courses, standard under-barrel tube capacities can leave you wanting. At the same time, massive 20-round stick magazines can feel overly long and bulky when maneuvering through doorways. The **Mossberg® Factory OEM 590M 15-Round Detachable Magazine (95139)** hits the sweet spot. It lands on your armorer bench as a highly specialized, intermediate high-capacity feeding engine that balances a massive 15-round payload with a manageable, agile profile.
Precision-engineered and manufactured in the United States, this heavy-duty box magazine utilizes a patented internal track that tapers from a double-stack column into a single-position feeding mouth. The outer casing is molded from an advanced **carbon-fiber reinforced polymer matrix**, making it practically immune to impact cracking, crushing forces, and extreme temperatures. The upper feed neck is embedded with hardened steel-reinforced locking lugs that click home flawlessly into the 590M receiver. Inside, a self-lubricating, anti-tilt follower and an extra-power music wire spring guide heavy 12-gauge buckshot, slugs, or target hulls into the chamber without hesitation.
Featuring a prominent, molded waffle-grid texture across the body panels, this 15-round module ensures non-slip, positive control during fast tactical reloads on your workbench.
*Armorer Bench Notes & Real-World Shotgun Staging Guidance: The Mossberg 95139 factory replacement magazine arrives complete and individually protected inside its original retail display packaging. CRITICAL CO-DEPENDENT FIREARM FITMENT MATRIX: This magazine is engineered strictly and exclusively to lock into the **Mossberg 590M (Mag-Fed) shotgun family, including the 590M Tactical and 590M Shockwave variants** featuring factory-installed magazine wells on your bench. ABSOLUTE INCOMPATIBILITY WARNING: This module will not fit standard tube-fed Mossberg 500, 590, or 930 models, nor will it interface with alternative mag-fed shotguns like the Remington® 870 DM or Saiga-style platforms due to proprietary receiver lockup paths. Ammunition Dimensional Parameters: This magazine is tuned strictly for 12-Gauge, 2.75-inch (70mm) shells. *Armorer Warning Note:* Do not attempt to load 3-inch or 3.5-inch magnum shells into this body, as the longer hull will bind inside the tracking channel and cause catastrophic feeding failure. Armorer Workbench Staging & Loading Sequence: 1. Ensure your shotgun is completely empty, safety on, action closed, and clear of live ammunition. 2. When loading shells by hand, push the rim of the shell straight down into the center of the follower, then slide it rearward under the steel feed lips. 3. To insert into the firearm, tilt the front alignment spine of the magazine into the forward notch of the receiver magwell first, then pivot the rear upward until the dual side latches click rigidly home. Field Maintenance Advice: Clean the interior by sliding off the floorplate; wipe down the walls with a dry microfiber cloth, and never apply liquid gun oil inside the channel, as sticky oil captures plastic hull shaving debris and burnt powder soot downrange.*
Key Features
- High-Capacity 15-Round Core: Packs 15 heavy 12-gauge shells into a detachable box magazine, maximizing firepower while remaining more compact than a 20-round drum.
- Carbon-Fiber Reinforced Shell: Molded from a rugged, lightweight polymer composite matrix that withstands heavy tactical impact forces and hard trail drops.
- Genuine Mossberg Factory OEM: Formulated and built in the USA to exact factory blueprint specs, ensuring absolute lockup alignment and optimal cycle speeds.
- Steel-Reinforced Feed Lips: The upper dual-sided indexing teeth are embedded with hardened steel inserts to prevent lip spreading or warping under full spring load.
- Anti-Tilt Low-Friction Follower: Outfitted with an advanced, self-lubricating follower that glides smoothly along the inner channels, cutting out shell nose-dives.
- Aggressive External Grasp Ribs: Designed with prominent structural waffle ribbing across the body faces to guarantee a non-slip grip during quick winter swaps.
Product Specifications
- Brand: Mossberg® (O.F. Mossberg & Sons - North Haven, Connecticut)
- Model Line: Factory OEM 590M Detachable High-Capacity Ammunition Feeding Series
- MPN/SKU: 95139 (Also cataloged as MOS-95139-BLK)
- UPC Code Profile: 015813951395
- Shotgun Platform Fitment: Mossberg® 590M (Mag-Fed) Shotguns and 590M Shockwave Frameworks Only
- Standard Shell Capacity: 15 Rounds (Staggered double-stack internal layout spec)
- Compatible Ammunition Caliber: 12 Gauge Only (Optimized for 2.75-Inch / 70mm Shell Lengths)
- Magazine Housing Material: Proprietary High-Tensile Carbon-Fiber Reinforced Polymer Composite Matrix
- Feedway Structural Inserts: Precision Embedded Hardened Steel Feeding Lips Component
- Follower Component Style: High-Visibility Black Self-Lubricating Anti-Tilt Polymer Follower
- Internal Spring Configuration: Heavy-Duty High-Tension Tempered Music-Wire Coiled Spring Matrix
- Exterior Finish Dressing: Non-Reflective Matte Textured Black Finish Layer
- Ammunition Load Options: Accepts standard 12ga 2.75" Buckshot, Slugs, and Target Loads
- Full Kit Component Checklist: Completed 15-Round 590M Poly Magazine Assembly, Retail Packaging
- Packaging Format Class: Factory Retail Peg-Hang Clamshell Blister Card Packing
- Product Type Category: Shotgun Components / Shotgun Ammunition Magazines
- Overall Body Silhouette Profile: Extended Sub-Receiver Curved Box Module
- Net Component Module Mass: ~17.80 Ounces (~504.6 Grams Heavy-Duty Empty Poly Assembly Weight)
- Country of Manufacture: Proudly Sourced, Machined, and Crafted in the United States of America
- Warranty Tracking Protection: Fully Backed by Mossberg Factory Parts Warranty Support
