Magpul Industries

Magpul M-LOK Aluminum Rail Section 5-Slot

Name: Magpul M-LOK Aluminum Rail Section 5-Slot
Brand: Magpul Industries
SKU: MAG581-BLK
Price: 30.95 GBP
Availability: InStock

£30.95

Tax included where applicable.

In stock7–10 day delivery

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Delivery Information

Orders are dispatched from the United Kingdom with tracked delivery and arrive in 7–10 days. You will receive tracking details by email once your order ships.

Returns & Refunds

Please see our Returns & Refunds policy for full details on returns and exchanges.

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SKU: MAG581-BLKUPC: 873750001661

Product Overview

The Magpul M-LOK Aluminum Rail Section, 5-Slot is an aluminium Picatinny rail section that mounts directly into any M-LOK handguard slot.

Add a length of Picatinny rail exactly where you need it — the direct-mount aluminium way to run rail accessories on an M-LOK handguard.

The Magpul M-LOK Aluminum Rail Section, 5-Slot (MAG581) bolts straight to any M-LOK slot and gives you five slots of MIL-STD-1913 Picatinny rail for lights, lasers, older mounts or a hand stop. Machined from hard-anodized aluminium for a rock-solid, low-profile platform, it uses the M-LOK cam-lock system for a secure, repeatable mount and ships with the hardware you need to fit it.

Why shooters choose the M-LOK Rail Section, 5-Slot

5 slots of Picatinny rail — mount rail accessories on an M-LOK forend
Hard-anodized aluminium — rigid, hard-wearing, low-profile
M-LOK cam-lock mount — secure and repeatable
Hardware included — ready to fit out of the pack

What the M-LOK Rail Section, 5-Slot fits

Fits any M-LOK-compatible handguard or forend, and provides MIL-STD-1913 Picatinny rail for rail-mount accessories. Handguards that are Picatinny-only or use a different slot standard will not take it, so check what your forend actually is before ordering. The M-LOK mounting hardware is supplied — fit it where the accessory needs to sit, torque it down and re-check after the first range trip. The same section is also made in three-slot, seven-slot and nine-slot lengths, so you can match the run to the accessory.

Specifications

Type	M-LOK to Picatinny rail section
Material	Hard-anodized aluminium
Finish	Black
Length	5 Picatinny slots
Mount interface	M-LOK direct-attach
Brand	Magpul Industries
MPN	MAG581-BLK

Put rail exactly where the accessory needs it. Order the 5-Slot M-LOK Rail Section today — in stock at Xtreme Tactical Gun Parts with free tracked UK delivery in 7–10 days.

Explore more: M-LOK Accessories or browse all Magpul.

What's Included

Magpul M-LOK aluminium rail section (5-slot)
M-LOK mounting hardware

Compatibility & Fitment

Fits any M-LOK-compatible handguard or forend. Provides MIL-STD-1913 Picatinny rail for rail-mount accessories.

Please confirm platform, interface and fitment requirements before ordering.

How It Compares

Choosing between versions? Jump straight to the alternative that fits your build.

3-slot rail section 7-slot rail section 9-slot rail section All M-LOK accessories

Technical Specifications

Type	M-LOK to Picatinny rail section
Material	Hard-anodized aluminium
Finish	Black
Length	5 Picatinny slots
Mount interface	M-LOK direct-attach
Brand	Magpul Industries
MPN	MAG581-BLK
SKU / MPN	MAG581-BLK
UPC / Barcode	873750001661

Shop Related Categories

Shop AR-15 Parts & Accessories View category

Shop M-LOK Accessories View category

Shop Magpul Industries View category

Related Buying Guides

Not sure which option is right for your build? These guides break it down.

Buying Guide Best AR-15 Upgrades Under £100 (That Actually Make a Difference)

Buying Guide M-LOK vs Picatinny: A Guide to Mounting & Rail Systems

View all buying guides →

Product Questions

Will this rail section fit my handguard?

It fits any M-LOK-compatible handguard or forend, so the first thing to check is that your forend is genuinely M-LOK rather than Picatinny-only or a different slot standard. You also need a clear run of M-LOK slots long enough to take a five-slot section where the accessory needs to sit. If your handguard is already Picatinny along its full length, you don't need this at all.

What does an M-LOK rail section actually do?

It converts M-LOK slots into MIL-STD-1913 Picatinny rail, so accessories built for Picatinny will mount on an M-LOK forend. That covers lights, lasers, older mounts and a hand stop — anything with a rail clamp rather than a direct M-LOK footprint. It uses the M-LOK cam-lock system, which draws the section tight inside the slot for a secure, repeatable mount.

How many slots do I need, and how does this compare with the other lengths?

Five slots is the middle option, giving enough rail for a light or a longer mount without covering the whole forend. The same hard-anodized aluminium section is also offered in three-slot, seven-slot and nine-slot lengths, so you can match the run to the accessory rather than the other way round. Our M-LOK vs Picatinny guide explains the two standards, and you can see what else direct-mounts in M-LOK Accessories.

Is fitting it straightforward?

Yes — the M-LOK mounting hardware is supplied, so you position the section where the accessory needs to sit and torque it down. There are no permanent changes to the handguard and nothing gunsmith-level about it. It is worth re-checking the fasteners after the first range trip, as with any newly fitted rail hardware.

How will it arrive?

Rail sections are sent from the United Kingdom with free tracked UK delivery in 7–10 days, and you'll get tracking by email when it ships. If a part turns out to be the wrong fit, see our returns policy or contact us and we'll help sort it.