Mossberg Factory OEM 590M Series Detachable Magazine - 10-Round Capacity - Fits 590M Mag-Fed Shotguns - 12 Gauge, 2.75" Shells, Carbon-Fiber Reinforced Polymer, Matte Black Finish - Item 95138
Product Description
If you are trying to find the perfect balance between high payload capacity and nimble handling on your defensive pump-action shotgun, choosing between ultra-compact blocks or massive stick magazines can feel like an impossible compromise. Over-extended 20-round mags offer extreme fire endurance but add significant vertical bulk, making it harder to maneuver through tight hallways or keep your platform balanced on your staging bench. The **Mossberg® Factory OEM 590M 10-Round Detachable Magazine (95138)** delivers the ultimate mid-size sweet spot. It provides a double-stack 10-round column that offers twice the capacity of standard tubular shotguns while maintaining a sleek, fast-handling center of gravity.
Proudly engineered and manufactured in the United States to uncompromised duty-grade standards, this premium box magazine features a patented internal track that tapers cleanly into a single-position feeding mouth. The chassis housing is molded from an advanced, proprietary **carbon-fiber reinforced polymer matrix**, making it immune to extreme crushing forces, severe field impacts, and intense workspace cleaning solvents. The upper section features precision-formed, steel-reinforced locking lugs that engage smoothly with the 590M receiver, while a self-lubricating, anti-tilt follower driven by a heavy-duty music wire spring feeds heavy buckshot, slugs, or target handloads flawlessly into the chamber.
Outfitted with aggressive external waffle-style tracking grooves along the casing walls, this 10-round performance magazine ensures a rock-solid grip during high-speed, dynamic tactical swaps on your armorer workbench.
*Armorer Bench Notes & Real-World Shotgun Staging Guidance: The Mossberg 95138 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
- Optimal Mid-Capacity Form Factor: Holds 10 rounds of heavy 12-gauge shells, offering the perfect blend of tactical payload capacity and agile firearm maneuverability.
- 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 Mid-Capacity Ammunition Feeding Series
- MPN/SKU: 95138 (Also cataloged as MOS-95138-BLK)
- UPC Code Profile: 015813951388
- Shotgun Platform Fitment: Mossberg® 590M (Mag-Fed) Shotguns and 590M Shockwave Frameworks Only
- Standard Shell Capacity: 10 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 10-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: Medium Extended Sub-Receiver Box Module
- Net Component Module Mass: ~14.20 Ounces (~402.5 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
