Open Box Return-MI G4M Gen 4 M-Series AR-15 M-LOK Handguard -15 inch


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Returned items may be scuffed or scratched, packaging may be damaged. Guaranteed fully functional!

The MI-G4M Series Handguard is A Lightweight & Rock-Solid Upgrade For Your AR Build

The Midwest Industries G4M Series is a lightweight M-LOK compatible free float handguard designed to improve upon the AR-15 platform. It features a super-slim 1.5″ outside diameter that reduces unwanted bulk and maintains the low-profile feel on your AR build.

The G4M handguard features a rock-solid lock-up design that utilizes MI’s torque plate system and delivers seven sides of M-LOK slots so users can enjoy numerous accessory mounting options.

Fully Dehorned For a Non-Abrasive, Comfortable Feel

The Midwest Industries G4M Series is constructed from rugged 6061 aluminum with hard coat anodizing and comes fully dehorned for a non-abrasive, comfortable feel. It promotes simple and easy installation and delivers a great upgrade for your AR-15 build with reliable features that will last a lifetime.


  • 4140 Heat Treated Barrel Nut and Wrench
  • Patented 4140 Heat Treated Torque Plate
  • 10.50″, 12.625”, 13.375”, 14”, and 15” models
  • 8.8 – 11.5 oz (Depending on Model)
  • 6061 Aluminum Type 3 Hard Coat Anodized Finish
  • Continuous MIL-STD 1913 Picatinny Top Rail
  • Five Integral Anti-rotation QD Sling Sockets
  • Super Slim 1.5” Outside and 1.3” Inside Diameter
  • Seven Sides of M-LOK™ Surfaces
  • 5-Slot Polymer M-LOK™ Rail Included
  • Fully Dehorned and Deburred
  • 100% Made in USA
  • MI Lifetime Warranty

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