12.5″ S&W M&P15-22 Free Float Handguard with Picatinny Rail


This free float handguard is made specifically for the S&W M&P15-22.

Features zero gap between the receiver and rail, with a top Picatinny rail and M-LOK accessory slots.

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SKU: HG-12MLKRAIL-MP1522 Category: Brand:


The proprietary barrel nut included with this S&W M&P15-22 free float handguard fits ONLY the following Smith & Wesson M&P15-22 models:

  • S&W M&P15-22 Gen 1
  • S&W M&P15-22 Gen 2
  • S&W M&P15-22 Sport
  • Performance Center S&W M&P15-22 Sport
  • S&W M&P15-22 Pistol

This barrel nut is compatible with most¬†AR-15 armorer’s wrenches, or a standard 1-1/4 open end wrench.

S&W M&P15-22 Free Float Handguard Features

  • Ultra-lightweight, heavy-duty, T6 aluminum body.
  • Anti-rotation built into the handguard.
  • M-LOK modular locking accessory mounting system.
  • Top Picatinny¬†rail at the front and rear of the handguard.
  • Barrel nut included.
    • Handguard slides over barrel nut and is secured against the receiver using 3 screws and a special keeper.
  • Tumble de-burred, bead blasted, acid etched, and then finished with MIL-SPEC hard coat anodizing.
  • Length: 12.5″
  • Internal Diameter: 1.36″
  • Total Weight: 10.8 oz

Recommended Tools

Tools for the new barrel nut

  • 1-1/4″ open end wrench
  • Adjustable jaw wrench (AKA Crescent)

Additional information

Weight 0.49375 lbs
Dimensions 10 x 3 x 3 in


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