Magpul M-LOK Aluminum Rail Section - 7 Slots, Mil-Spec Picatinny Interface, CNC-Machined 6061-T6 Aluminum, Type III Hard-Coat Anodized, Black Finish - MAG582-BLK / 873750001678
Product Description
Upgrading a modern sporting rifle, high-performance tactical carbine, or custom firearm handguard chassis requires accessory attachment points built to rigid structural standards. Lower-tier polymer or un-anodized commercial rail sections can bend, flex, or even strip their threads under the hard leverage of vertical grips, bipod legs, or high-output weapon lights on your bench. The **Magpul® M-LOK® 7-Slot Aluminum Picatinny Rail Section (MAG582-BLK / 873750001678)** completely flatlines these load-bearing infrastructure bottlenecks, delivering a premium **heavy-duty structural bridge** built straight from original M-LOK engineering standards.
Proudly designed, machined, and stress-tested in the United States by Magpul Industries, this ultra-tough rail section is CNC-milled from a single block of **6061-T6 aircraft-grade aluminum alloy** and coated in a non-reflective **Mil-Spec Type III Class 2 hard-coat anodized layer**. The design features **seven usable 1913 Picatinny rail slots**, giving armorers a solid platform to adapt older rail-mounted gear onto streamlined M-LOK handguards. To prevent movement under severe recoil, it is engineered with integral **recoil mitigation lugs** on the back surface, alongside beveled outer edges that minimize bulk and resist snagging in dense brush. Ready for immediate deployment, this turn-key tactical component upgrades your primary weapon layout straight from your workbench.
Engineered to bolt flush onto standard metal or polymer M-LOK slots, this factory-calibrated utility adapter ensures absolute component security directly from your workspace bench.
*Armorer Bench Notes & Real-World M-LOK Mounting Guidance: The Magpul MAG582-BLK utility package arrives workspace ready, containing 1x premium 7-slot billet aluminum rail section, 2x high-tensile steel button-head Allen cap screws, 2x optimized self-locking M-LOK T-nuts, and a factory thread-locking fluid token pre-applied to the fastener bodies. PROPRIETARY M-LOK SLOTTED HOUSING INTERFACE MATRIX: The structural adapter base layout is engineered natively, strictly, and precisely to seat into **any standard metal, carbon fiber, or reinforced polymer M-LOK handguard slot system**. *Accessory Clearance Checklist:* The 7-slot configuration yields a total outer length metric of 3.15 inches, meaning it spans across exactly **two full M-LOK slot segments** on your handguard barrel sleeve shell. Armorer Workbench Custom Staging Sequence: 1. Visually and physically confirm your host rifle platform is completely clear of live ammunition, the magazine is separated, and the chamber area is empty and safe. 2. Thread the Allen screws through the top countersunk holes of the rail section and into the M-LOK T-nuts loosely, ensuring the flat camming surface faces upward toward the rail body. 3. Adjust the spacing gap so that the T-nut can slide completely flush through the handguard window frame slot. 4. Lay the rail block down into the handguard slots at your desired position, verifying the rear stabilization keys drop all the way down into the pocket. 5. Utilize the included hex key to turn the screws clockwise, watching closely to confirm the inner T-nuts rotate exactly 90 degrees to lock perpendicular across the inner slot walls. 6. Final-torque the fasteners using an armorer torque driver tool—stopping at a limit of **35 inch-pounds for metal handguards or 15 inch-pounds for polymer handguards**—before attaching tactical lights or forward grips downrange.*
Key Features
- 7-Slot Mil-Spec 1913 Picatinny Deck: Provides seven precise, standard Picatinny slots to securely attach legacy rail-mounted accessories like weapon lights, bipods, and foregrips onto M-LOK systems.
- CNC-Machined 6061-T6 Billet Alloy: Precision-milled from a block of high-tensile structural aircraft aluminum, preventing the flexing and cracking flaws common in budget polymer rails.
- Type III Hard-Coat Anodized Finish: Sealed in a thick, premium hard-anodized layer that protects the underlying metal against field scrapes, hand sweat corrosion, and harsh cleaners.
- Integrated Recoil Control Lugs: Features machined, solid alignment blocks on the underside that absorb shear forces, keeping the rail completely stationary under heavy recoil.
- Sleek Anti-Snag Beveled Ends: Designed with cleanly rounded outer corners and a low-profile taper to minimize bulk and prevent the rail from catching on tactical vests or brush.
- Pre-Applied Thread Locker Hardware: Ships standard with premium steel mounting fasteners pre-treated with high-stability thread locker to prevent screws from backing out under vibration.
Product Specifications
- Brand: Magpul Industries® (Austin, Texas / Made Proudly in the USA)
- Model Line: M-LOK System Direct-Attach Modular Hardware Accessories
- MPN/SKU Code: MAG582-BLK (7-Slot Aluminum Anodized Black Base Specification SKU)
- UPC Code Profile: 873750001678
- Handguard System Compatibility: Standardized Metal or Polymer M-LOK Slot Configurations Natively
- Accessory Mount Formatting: Standard Mil-Spec 1913 Picatinny Cross-Slot Rail Layout Standard
- Total Number of Usable Slots: 7 Active Picatinny Elevation Slots Crossways
- Structural Material Base: CNC-Machined Solid 6061-T6 Aircraft Grade Structural Aluminum Alloy
- Exterior Surface Protection: Mil-Spec Type III Class 2 Matte Black Hard-Coat Anodized Surface Coating
- Mounting Hardware Included: 2x High-Tensile Steel Allen Fasteners with Pre-Applied Thread Locker Core
- Retention Nut Mechanical System: 2x Genuine Self-Camming Manganese Phosphate Treated Steel M-LOK T-Nuts
- Full Kit Component Checklist: 1x 7-Slot Aluminum Rail, 2x Screws, 2x M-LOK T-Nuts, Installation Leaflet
- Packaging Format Class: Factory Original Sealed Magpul Retail Header Card Pouch with Anti-Counterfeit Labels
- Product Type Category: Rifle Accessories / Tactical Rail Sections & Handguard Adapter Hardware
- Overall Structural Component Width: ~0.83 Inches (~21.0 mm Standard Picatinny Tracking Clearances)
- Overall Physical Component Length: ~3.15 Inches (~80.0 mm Linear Handguard Window Coverage)
- Net Component Module Mass: ~1.20 Ounces (~34.0 Grams Ultra-Lightweight Structural Tactical Metal Build)
- Global Quality Certifications: Engineered to Official Military and Professional Duty Specifications
- Warranty Tracking Protection: Fully Backed by Magpul Factory Original Product Materials Guarantee
