Guntec USA 10 inch Ultra Slimline Octagonal Keymod "Sharkmouth" Free Float Rail

80% of 100
In 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.

  • US Made
  • T6 Aluminum Body
  • 5 Sided Keymod, at the 90, 135, 180, 225, 270 Degree Marks
  • Octagonal Slimline Design
  • Thin Grooves In Extrusion For Better Gripping
  • "Shark Mouth" Front Cutout Design
  • Ultra Lightweight
  • Proprietary Barrel Nut Included
  • Total Weight Including Barrel Nut is 6.6 oz
  • KeyMod System
  • Rail System Slides Over Barrel Nut , And Is Locked Up Against Receiver With 6 Screws
  • Tight Fit Up Against Receiver, Which Allows For A Monolithic Top Rail
  • 10" Specter Length
  • Heavy Duty
  • Internal Diameter: 1.31
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