Magpul M-LOK Rail Cover, Type 2
Six-panel polymer M-LOK covers that protect unused slots, add grip texture, and shield the support hand from heat.
- Price
- $15
- Brand
- Magpul
- Category
- Lower Parts
Features
- •MAG603
- •6 panels per pack
- •Aluminum M-LOK only
- •TSP textured surface
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Magpul Industries M-LOK Type 2 Low Profile Rail Covers Black MAG603BLK
Magpul M-LOK Rail Cover, Black (Type 2)- Mag603-BLK
Price History
90-day low $14.25 · at low nowMore AR-15 guides & articles
Guides
Overview
Magpul M-LOK Rail Covers Type 2 (MAG603) are the default answer to the question every new M-LOK handguard owner asks: what do I do with all these empty slots? Each pack ships six low-profile polymer panels that snap directly into the M-LOK pockets without screws or T-nuts. The covers protect the support hand from sharp slot edges, dampen heat transfer after sustained fire, and add a textured TSP grip surface that survives wet hands and gloves.
Each panel is pre-scored down the center, so you can snap one in half to fill a partial slot or mix sections for a custom layout. The profile sits about 1/8 inch above the handguard, low enough to avoid printing under a sling but tall enough to give the support hand something to register against. Beveled edges keep them from snagging on slings, plate carriers, and door frames.
Fitment is aluminum free-float M-LOK handguards only. Polymer M-LOK furniture (MOE handguards, SL-K, etc.) does not have the recessed pocket geometry these need. If your handguard is polymer, look at the Type 1 covers (MAG602) instead, which use a heat-resistant flexible material designed to bridge both polymer and aluminum hosts.
Key Features
- Six panels per pack, each covers one M-LOK slot
- Tool-free snap-in install — no T-nuts, no Allen keys
- Pre-scored center allows snapping into half-length sections
- TSP texture for grip, beveled edges to prevent snagging
- Low-profile (~1/8" stand-off) doesn't add bulk under a sling
- Available in Black, FDE, OD Green, and Stealth Gray
- Made in USA by Magpul
Pros
- +Cheapest way to cover sharp M-LOK slot edges
- +Reduces heat transfer from a hot handguard to the support hand
- +Adds real grip texture without changing handguard profile
- +Color-matches existing Magpul furniture
- +Six panels covers most of a 12-15" handguard for under $20
Cons
- −Aluminum M-LOK handguards only — Type 1 (MAG602) for polymer hosts
- −Type 2 polymer can melt if pressed against suppressor blast shields
- −Snap retention can loosen after repeated removal/reinstall
Detailed Specifications
- modelNumber
- MAG603
- compatibility
- Aluminum free-float M-LOK handguards (long guns)
- panelsPerPack
- 6
- slotsPerPanel
- 1
- Material
- Polymer with TSP texture
- profile
- Low-profile, ~1/8" stand-off
- installation
- Tool-free snap-in
- colors
- Black, FDE, OD Green, Stealth Gray
- madeIn
- USA
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Build Your Custom Configuration
Add the Magpul M-LOK Rail Cover, Type 2 to your build and see how it enhances your platform.