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Magpul MAG551 MOE SL™ Handguard, Midlength

Out of stock

The MOE SL Hand Guard for AR15/M4 firearms with mid-length gas system and A2 font sight* provides modular flexibility with M-LOK® accessory slots in a lightweight, sleek, cost effective design.

Designed with versatility in mind, M-LOK slots at the two, six, and ten o’clock positions allow the attachment of optional Picatinny rail sections and other accessories for mounting tactical lights, slings, grips, etc. Reinforced, heat-resistant polymer construction provides durability without the weight and expense of an aluminum rail hand guard. A large front extension and lower lip protects the user from the hot front sight gas block assembly and maximizes useable hand guard length.


  • Narrow design replaces factory 2-piece, mid-length plastic hand guards
  • Easy to install utilizing existing delta ring and ROUND front hand guard retaining cap with A2 front sight assembly*
  • Slots at the two, six, and ten o'clock positions for mounting direct-attach M-LOK accessories or M-LOK 1913 Picatinny rail sections
  • Reinforced, heat-resistant polymer construction
  • Integral riveted aluminum heat shield
  • Front lip and long side extensions shields hand from hot sight assembly
  • Made in U.S.A.

*Note: The Mid-Length MOE SL Hand Guard is a direct replacement for most factory plastic, two-piece, mid-length hand guards and requires a ROUND front hand guard retaining cap and rear spring-loaded delta ring (some mid-length firearms are equipped with a triangular retaining cap and are not compatible).

Must be used with the A2 front sight assembly as other gas blocks are not compatible. If so equipped,  the factory sling swivel must be removed from the A2 front sight assembly.

You get:

  • (1) Handguard in the colour of your choice

    Compatible with:

    • Delta ring kits
    • Round front caps
    • 11-3/4" gas tube systems 
    • MLOK stuff

    Installation Difficulty: 

    Tools required: Delta ring tool

    Installation notes: Squish the delta ring assembly, remove the current hand guard. reverse the process with this new one in place 

    Model numbers:

    • MAG551-BLK - Black
    • MAG551-FDE - Flat Dark Earth
    • MAG551-GRY - Stealth Gray
    • MAG551-ODG - Olive Drab Green