Midwest Industries G4 M-LOK Handguard - 12.625"

Manufactured by Midwest Industries
SKU: MI-G4M12.625
MPN: MI-G4M12.625
Manufactured by Midwest Industries
1 Review

In Stock

Standard orders will ship out within 2 business days or less. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



Whether you're building an AR-15 from the ground up or wanting to make improvements to the rifle you have, the G4 M-LOK Handguard from Midwest Industries is what you need to take your rifle to the next level.

  • Handguard Material: 6061 Aluminum
  • Color: Black Hard Coat Anodized
  • Length: 12.625 Inches
  • Weight: 9.9 Ounces Installed
  • Origin: U.S.A.
  • M-LOK Rail: Polymer
  • Picatinny: 1913 Top Rail
  • Included: Barrel Nut and Torque Plate
  • Torque Plate Material: 4140 Heat Treated

This G4 M-LOK Handguard from Midwest Industries features a patented 4140 steel Heat Treated Torque Plate and comes with a barrel nut for easy and straightforward installation. With a 12.625 inch overall length, the G4 M-LOK weighs a trim 9.9 ounces after installation and is equipped with a MIL-STD 1913 Picatinny top rail.

To make the G4 M-LOK handguard an even more attractive modification, Midwest Industries includes five anti-rotation QD sling sockets and a five slot picatinny rail. Made in the U.S.A., the G4 M-LOK also is fully dehorned and deburred to guarantee no rough edges and a tight and firm fit. Midwest Industries manufactures the G4 M-LOK Handguard from 6061 aerospace-grade aluminum and gives it a Type III hard coat anodized treatment to ensure rugged durability.

Just like all products from Midwest Industries, the G4 M-LOK comes with MI's Lifetime Warranty. Not just your run of the mill handguard, this G4 M-LOK Handguard from Midwest Industries will probably be one of the best improvements you can make to your AR-15 rifle.
See More


Accessory AttachmentM-LOK
BrandMidwest Industries
FinishHardcoat Anodized
Gas System LengthCarbine
Handguard Length12.625
Inner Diameter1.3 in.
MaterialAluminum - 6061-T6
Weight9.9 oz.

Ratings & Reviews

1 review

  • 4 stars
  • 0 reviews
  • 3 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews

Perfect fit for my 13.7" barrel.

by -

I love Midwest industries rails. They look the best in my opinion so I already knew the direction I wanted to go with my build. The MI 12.625" rail is the best choice for a pinned 13.7" AR-15!