My Account (Sign in)
Your basket is empty.
0
Basket
contact us by phone Help and contact
Free standard delivery over £199
100-day return policy
My Account (Sign in)
Wish list
Your basket is empty. (0)
Basket
Newsletter Newsletter
Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

Rifle Parts Forend & Handguard Parts Handguard & Rail Accessories Accessory Rails MAGPUL M-LOK RAIL 9-SLOT PICATINNY 4.1" POLYMER FOR AR-15 BLACK Support

Enhance your AR-15 with the lightweight MAGPUL M-LOK 9-Slot Polymer Rail, designed for easy attachment of Picatinny accessories and featuring durable, snag-free edges.

MAGPUL M-LOK RAIL 9-SLOT PICATINNY 4.1" POLYMER FOR AR-15 BLACK

873750001234 100016258

Filters:

Variations
Filters:
Variations:

Variations:

Enhance your AR-15 with the lightweight MAGPUL M-LOK 9-Slot Polymer Rail, designed for easy attachment of Picatinny accessories and featuring durable, snag-free edges.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 9-SLOT PICATINNY 4.1" POLYMER FOR AR-15 BLACK
20.9 GBP 0 £20.90 *
Backorderable
Color: Black Length: 4-1/10 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100016258
Backorderable
20.9 GBP 0 £20.90 *
-12 %
The MAGPUL M-LOK Polymer Rail offers lightweight durability, easy attachment for Picatinny accessories, and beveled ends to prevent snagging on your AR-15.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 5-SLOT PICATINNY 2.375" POLYMER FOR AR-15 BLACK
14.9 GBP 126 £14.90 * £16.90
In stock
Color: Black Length: 2-3/8 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100015363
In stock
14.9 GBP 126 £14.90 * £16.90
-12 %
The MAGPUL M-LOK 3-Slot Picatinny Rail offers a lightweight, durable solution for attaching accessories to your AR-15, complete with all necessary hardware.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 3-SLOT PICATINNY 1.6" POLYMER FOR AR-15 BLACK
14.9 GBP 20 £14.90 * £16.90
In stock
Color: Black Length: 1-3/5 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100016260
In stock
14.9 GBP 20 £14.90 * £16.90
-5 %
The MAGPUL M-LOK Polymer Rail offers a lightweight, durable solution for attaching Picatinny accessories, featuring beveled ends for safety and easy installation.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 11-SLOT PICATINNY 4.9" POLYMER FOR AR-15 BLACK
19.9 GBP 114 £19.90 * £20.90
In stock
Color: Black Length: 4-9/10 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100016257
In stock
19.9 GBP 114 £19.90 * £20.90
-5 %
The MAGPUL M-LOK 7-Slot Polymer Rail offers lightweight durability, easy attachment for Picatinny accessories, and beveled ends to reduce snagging.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 7-SLOT PICATINNY 3.3" POLYMER FOR AR-15 BLACK
17.9 GBP 90 £17.90 * £18.90
In stock
Color: Black Length: 3-3/10 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100016259
In stock
17.9 GBP 90 £17.90 * £18.90
14.9 20.9 5 GBP
20.9 GBP £20.90

Prices inclusive of duty & VAT.

Product no.: 100016258

Mfr. No.: MAG592-BLK

873750001234 Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Polymer Rail Sections provide a cost effective method of attaching various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Injection molded from a proprietary reinforced composite for enhanced strength and durability while remaining lightweight. Rail Sections also feature beveled ends to reduce snagging and eliminate sharp corners and edges. All hardware necessary for attachment directly to M-LOK Slots on either aluminum or polymer hand guards and forends is included.
Backorderable
Be the first to rate this product
1
2
3
4
5
6
7
8
9
10+
£20.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Backorderable, delivery time approx. 4-12 weeks from the USA warehouse.

100-Day Return Policy

Backorderable, delivery time approx. 4-12 weeks from the USA warehouse.

100-Day Return Policy
No charges until we ship
No charge:
Your credit card will not be charged when you place your order.

No commitments:
You are under no obligation until the goods are shipped. You can cancel your order at any time before shipping - free of charge.

Not until shipping:
Your credit card will only be charged once we ship your order. Not before.
  • Lightweight polymer construction
  • Compatible with M-LOK systems
  • Beveled ends for safety
Wish List Ask question
14.9 20.9 5 GBP
Description Specification Customers reviews Accessories

MAGPUL M-LOK RAIL 9-SLOT PICATINNY 4.1" POLYMER FOR AR-15 BLACK

20.9 GBP £20.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+
£20.90

Prices inclusive of duty & VAT.

1
2
3
4
5
6
7
8
9
10+

Backorderable, delivery time approx. 4-12 weeks from the USA warehouse.

100-Day Return Policy

Description:

Enhance your AR-15 with MAGPUL's M-LOK Polymer Rail Sections

Designed for use with all M-LOK compatible Hand Guards and Forends, the M-LOK Polymer Rail Sections provide a cost-effective method of attaching various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, and more.

Key Features:

  • Injection molded from a proprietary reinforced composite for enhanced strength and durability while remaining lightweight.
  • Beveled ends to reduce snagging and eliminate sharp corners and edges.
  • Includes all necessary hardware for attachment directly to M-LOK Slots on either aluminum or polymer hand guards and forends.

Specifications:

  • MAG593: 11 Slots, max overall length of 4.9”
  • MAG592: 9 Slots, max overall length of 4.1”
  • MAG591: 7 Slots, max overall length of 3.3”
  • MAG589: 3 Slots, max overall length of 1.6”

Upgrade your firearm with the MAGPUL M-LOK Rail and experience the difference in performance and versatility.



Attributes

  • Colour: 
    Black
  • Length: 
    4-1/10 in
  • Material: 
    Polymer
  • Style: 
    Picatinny
  • Type: 
    M-LOK
  • Weapon type: 
    AR-15
  • Delivery weight: 0.041kg
  • Shipping height: 25mm
  • Shipping width: 83mm
  • Shipping length: 222mm
  • UPC: 873750001234

Item details

Made in USA

Customers reviews

Customer ratings (0)

0 / 5

Variations:

Enhance your AR-15 with the lightweight MAGPUL M-LOK 9-Slot Polymer Rail, designed for easy attachment of Picatinny accessories and featuring durable, snag-free edges.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 9-SLOT PICATINNY 4.1" POLYMER FOR AR-15 BLACK
20.9 GBP 0 £20.90 *
Backorderable
Color: Black Length: 4-1/10 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100016258
Backorderable
20.9 GBP 0 £20.90 *
-12 %
The MAGPUL M-LOK Polymer Rail offers lightweight durability, easy attachment for Picatinny accessories, and beveled ends to prevent snagging on your AR-15.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 5-SLOT PICATINNY 2.375" POLYMER FOR AR-15 BLACK
14.9 GBP 126 £14.90 * £16.90
In stock
Color: Black Length: 2-3/8 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100015363
In stock
14.9 GBP 126 £14.90 * £16.90
-12 %
The MAGPUL M-LOK 3-Slot Picatinny Rail offers a lightweight, durable solution for attaching accessories to your AR-15, complete with all necessary hardware.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 3-SLOT PICATINNY 1.6" POLYMER FOR AR-15 BLACK
14.9 GBP 20 £14.90 * £16.90
In stock
Color: Black Length: 1-3/5 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100016260
In stock
14.9 GBP 20 £14.90 * £16.90
-5 %
The MAGPUL M-LOK Polymer Rail offers a lightweight, durable solution for attaching Picatinny accessories, featuring beveled ends for safety and easy installation.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 11-SLOT PICATINNY 4.9" POLYMER FOR AR-15 BLACK
19.9 GBP 114 £19.90 * £20.90
In stock
Color: Black Length: 4-9/10 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100016257
In stock
19.9 GBP 114 £19.90 * £20.90
-5 %
The MAGPUL M-LOK 7-Slot Polymer Rail offers lightweight durability, easy attachment for Picatinny accessories, and beveled ends to reduce snagging.
AR-15 PICATINNY M-LOK RAIL POLYMER - M-LOK RAIL 7-SLOT PICATINNY 3.3" POLYMER FOR AR-15 BLACK
17.9 GBP 90 £17.90 * £18.90
In stock
Color: Black Length: 3-3/10 in Make: AR-15 Material: Polymer Style: Picatinny Type: M-LOK Product no.: 100016259
In stock
17.9 GBP 90 £17.90 * £18.90

Customers also bought

Oops! Something went wrong.

We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.

Site Navigation
Product Categories
Ordering
Customer Service

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.

Brownells Norge - Komplett utvalg av ladeutstyr, våpendeler, kuler, hylser, kikkerter, optikk og luftvåpen Brownells Österreich - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Switzerland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Deutschland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells France - Le plus grand fournisseur d'Accessoires pour le tir, Pièces détachées & Outils d'Armurier Brownells Iberica - El mayor proveedor de accesorios para el Tiro, Piezas y herramientas del armero. Brownells Sverige - Världens största leverantör av Vapendelar, Vapensmide Verktyg & Skyttetillbehör Brownells Suomi Brownells Italia - Il negozio del più grande rivenditore di componenti e accessori per armi da tiro, difesa e caccia Brownells Polska - Największy na świecie dostawca części broni, narzędzi rusznikarskich & akcesoriów strzeleckich Brownells Česko - Největší světový dodavatel součástí zbraní, střeleckého příslušenství a zbrojního nářadí
*
Prices inclusive of duty & VAT.

© 2025 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top