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MI G3 12” Lightweight LWM M-LOK Midwest One Piece Free Float Handguard
MI G3 12” Lightweight LWM M-LOK Midwest One Piece Free Float Handguard

MI G3 12” Lightweight LWM M-LOK Midwest One Piece Free Float Handguard

Part Number:MI-LWM12G3
On sale: $162.00
Retail Price:$199.95
You Save:$37.95(19%)
In Stock.

Choose Options

Add 1.25" QD Sling Swivel [+$8.95]
One 3" Rail [+$17.94]
Two 3" Rails [+$34.95]
Three 3" Rails [+$51.95]

MI Midwest Industries Lightweight M-LOK Free Float Handguard AR15 AR-15 Forearm MI-LWM12G3-BLK or

Not piston compatible due to the weight relieved top rail. Select standard version for piston systems.


  • Professional grade, one piece free float design and construction
  • Incredibly lightweight design
  • 12.5 Inch Rifle Length weighs only 8.2 ozs. with barrel nut
  • Super slim 1.5 inch outside diameter, 1.3 inch inside diameter
  • One five slot Magpul® M-LOK™ polymer rail section included
  • Four sides of M-LOK™ compatible slots, five anti-rotation QD sling swivel sockets
  • High quality MIL-STD 1913 top rail
  • Constructed from 6061 aluminum, hard coat anodized for a lifetime of service
  • Patented Torque Plate System US Patent Number 9,453,69
  • Fully dehorned for a non-abrasive, comfortable feel
  • Simple installation, proprietary barrel nut and barrel nut wrench included
  • 100% Made in America - Keeps America Working
  • Midwest Industries Lifetime Warranty
  • Color: Black


MI-LWM-12 weighs 8.2oz


Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined from milspec-anodized aluminum, M-LOK Rail Sections also feature beveled ends to reduce snagging and eliminate sharp corners and edges. All hardware necessary for attachment directly to M-LOK Slots on either aluminum or polymer hand guards and forends is included. 5 Slots, max overall length of 2.5".

Keymod vs M-Lok: Which Will Set the Standard?

In 2012 Vltor introduced an “open source” universal attachment system for accessories called Keymod. The desire was brilliant to create an industry standard for directly mounting handguard accessories in a well engineered system with specifications available free for any manufacturer to use. Similar to a classic Beta vs VHS video tape battle, at the 2014 NRA annual meeting, Magpul introduced a new “open source” accessory attachment system known as M-Lok. While both systems are well designed and have the same goal, they have different solutions to the modular rail. I believe both will be around for quite some time since Keymod struck first and has quickly established a well accepted place industry wide. In addition to the powerful Magpul name though, M-Lok does offer several advantages that I feel will push it to the top:

  1. Cheaper/easier to manufacture M-Lok rectangular cut-outs vs Keymod keyholes.
  2. M-Lok is capable of being built into plastic hand-guards.
  3. More adjustability options exist along the slot vs a fixed keyhole.
  4. Aesthetically better looking (opinions vary).

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