Magpul MPMAG581-BLK M-LOK Aluminum Rail 5-Slot (SKU MPMAG581-BLK)
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Magpul MPMAG581-BLK 5-slot anodized aluminum M-LOK rail section for rifle forearms; works with all M-LOK forearms and provides mounting for 1913 Picatinny accessories; package quantity: 76; SKU MPMAG581-BLK.
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Description
Description
Product Overview
Magpul MPMAG581-BLK is a 5-slot M-LOK aluminum rail recorded under Rifle Accessories. Verified attributes include compatibility with M-LOK forearms, suitability for 1913 Picatinny accessories, and anodized aluminum construction. Package Qty is 76 and SKU is MPMAG581-BLK.
Why This Product
Source facts confirm this rail is intended for M-LOK forearms and provides mounting interface for 1913 Picatinny accessories (product-272573:f009, product-272573:f010). Anodized aluminum construction is explicitly noted and is relevant when specifying material for weight and corrosion considerations in accessory selection (product-272573:f011).
Key Verified Specifications
- Brand: Magpul (product-272573:f002, product-272573:f006)
- Model / SKU: MPMAG581-BLK (product-272573:f014)
- Category: Rifle Accessories / Accessory (product-272573:f005, product-272573:f004)
- Noted features: Works With All M-LOK Forearms; For 1913 Picatinny Accessories; Anodized Aluminum Construction (product-272573:f009, product-272573:f010, product-272573:f011)
- Package Quantity: 76 (product-272573:f008, product-272573:f012)
- Availability status: instock (product-272573:f015)
Appropriate Use Cases
- Ordering accessory rails in bulk for assembly or distribution where compatibility with M-LOK forearms is required (supported: product-272573:f009).
- Specifying a mounting solution to adapt 1913 Picatinny accessories to M-LOK forearms (supported: product-272573:f010).
What Customers Should Know
- Package Qty is 76—confirm whether this represents pieces per carton or another shipping unit for procurement and inventory planning (product-272573:f008, product-272573:f012).
- Source facts confirm anodized aluminum construction but do not provide weight, exact slot spacing, or length—verify dimensional specifications with the supplier before specifying fit for a particular build (product-272573:f011).
- Use SKU MPMAG581-BLK when ordering to ensure correct part (product-272573:f014).
Specifications
- Short Stroke Gas Piston Gas System (Rifle Length)
- 18.6″ Barrel Length ( Mid-Weight style, non-fluted)
- 1:8 Twist Rate Rifling

