Magpul MPMAG591-BLK M-LOK 7-Slot Polymer Rail (Black)
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Magpul MPMAG591-BLK — M-LOK 7-slot polymer rail, compatible with M-LOK forearms and designed to accept 1913 Picatinny accessories; SKU MPMAG591-BLK. Package quantity metadata: 152.
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Description
Description
Product Overview
Magpul MPMAG591-BLK M-LOK Polymer Rail (7-slot) — listed under Accessories and Rifle Accessories. Verified attributes state it works with all M-LOK forearms, provides interface for 1913 Picatinny accessories, and is high-strength polymer. SKU: MPMAG591-BLK. Package quantity metadata: 152.
Why This Product
Source facts identify the mounting standard (M-LOK) and that the rail accepts 1913 Picatinny accessories — critical facts for buyers matching accessories and forearm interfaces. Material (high-strength polymer) is supplied as an attribute for selection considerations.
Key Verified Specifications
- Brand / Manufacturer: Magpul (f002, f006, f007)
- Product categories: Accessories; Accessory; Rifle Accessories (f003, f004, f005)
- SKU / identifier: MPMAG591-BLK (f014)
- Noted features: Works With All M-LOK Forearms (f009); For 1913 Picatinny Accessories (f010); High-Strength Polymer (f011)
- Package Qty (metadata): 152 (f008, f012)
- Availability status: instock (f015)
Appropriate Use Cases
- Hardware procurement for AR-style or M-LOK equipped rifles where users need to mount Picatinny accessories to an M-LOK forearm (supported by attributes f009 and f010).
- Inventory ordering where package quantity (152) affects stocking and distribution calculations (f008).
What Customers Should Know
- Confirm SKU MPMAG591-BLK before ordering (f014).
- The record states compatibility with M-LOK forearms and Picatinny accessories; verify your specific forearm dimensions and accessory footprints against Magpul product documentation before installation (f009, f010).
- Package quantity metadata is 152; confirm whether this represents individual units or carton counts with the supplier (f008, f012).
- Availability is listed as instock in the product data; confirm current stock and shipping conditions prior to purchase (f015).
Specifications
- Short Stroke Gas Piston Gas System (Rifle Length)
- 18.6″ Barrel Length ( Mid-Weight style, non-fluted)
- 1:8 Twist Rate Rifling

