Magpul MPMAG589-BLK M-LOK 3-Slot Polymer Rail (Black)

Description

Product Overview

Magpul MPMAG589-BLK is listed in Accessories > Rifle Accessories. The record identifies this item as an M-LOK polymer rail section with three slots, described as compatible with M-LOK forearms and intended to accept 1913 Picatinny accessories. Brand: Magpul. Package Qty: 140. SKU: MPMAG589-BLK. Availability: instock.

Why This Product

Source attributes specify that this is a high-strength polymer accessory that attaches to M-LOK forearms and provides a mounting surface for 1913 Picatinny accessories. Those facts matter when planning parts for M-LOK handguards and for sourcing accessory rails that accept standard Picatinny mounts.

Key Verified Specifications

• Manufacturer / Brand: Magpul (f002/f006/f007)
• Category: Accessories — Rifle Accessories (f003/f004/f005)
• Product description: M-LOK polymer rail, 3 slots, black (existing_copy.full)
• Compatibility notes from attributes: Works With All M-LOK Forearms (f009); For 1913 Picatinny Accessories (f010)
• Material note: High-Strength Polymer (f011)
• Package quantity: 140 (f008/f012)
• SKU: MPMAG589-BLK (f014); availability: instock (f015)

Appropriate Use Cases

• Bulk procurement for shops or armorers stocking M-LOK to Picatinny interface rails — use the package quantity (140) to calculate reorder levels (f008).
• Installing short Picatinny‑mounted accessories (lights, lasers, QD mount adapters) to M-LOK handguards where a 3‑slot rail section is required (f009, f010).

What Customers Should Know

• Attributes state compatibility with M-LOK forearms and Picatinny accessories (f009/f010); verify rail orientation, screw hardware, and exact slot spacing with your M-LOK handguard vendor prior to installation.
• Package Qty is 140 (f008/f012); confirm whether that is the unit of sale (loose units, box of 140, or other pack configuration) for ordering and receiving.
• Material is listed as high-strength polymer (f011); if specific load ratings or environmental performance are required, request manufacturer technical data.