JEMachineTech 4 inch AR-15 M-LOK Free Float Rail

89 % of 100
Special Price $39.99 $59.99
Out of stock

Why Buy From Us?


Don't see the exact configuration you want? No problem, just let us know. Most of the time we can customize with the parts we have just to your liking.


All our uppers have a Lifetime Warranty to the original purchaser. Some conditions apply - click here for details.

Customer Service

We believe in customer service before and after the sale. We never take days or weeks to respond. Most of the time if you email or leave a message, we usually respond the same day or next business day.

Turnaround Time

Most of our uppers are built to order. Our most important goal is to get your order to you as quickly as possible without sacrificing quality. Please check the live status update on the banner above and/or on our homepage for current processing times.


We always specify the manufacturer of the major components therefore you know what you are getting. We only use quality components from well-known manufacturers.

The JEM minimalist design gives your AR-15 a slick, streamlined appearance. We have removed excess weight while retaining structural integrity. This innovative handguard also includes an integrated anti-rotation tabs keeping the handguard secure and stable.

  • Free float and lightweight design

  • Fastened by 6 head screws

  • Type III hard-coat anodized 6061-T6 aluminum

  • Full Picatinny rail on top

  • Anti-rotation tabs

  • Steel barrel nut and all mounting hardware included

  • 1.315” ID

  • Torque: 30-50 ft/lbs for the barrel nut

  • Made in US

  • **Only compatible with Standard Milspec AR-15 Upper Receivers**

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