Javelin 12" SD Rail System

Javelin-12″ SD M-LOK Handguard


The (SOT) Javelin-12 SD 556 (M-LOK) is one of our newest and latest generation Handguard made by SOTMFG to accommodate most Suppressors/Silencers.  Our design features a machined one piece billet aluminum extruded rail which is much stronger and more rigid than 2 piece rail systems. The Javelin series feature milled center sides that contour to the shooters hands as well as state of the art highly refined and detailed CNC machining.

In stock


SOT Javelin-12″ SD (M-LOK) Handguard

The (Javelin-12-SD-M-LOK)” Handguard has an overall length of 12.6″.  It is a cutting edge, highly refined Handguard system that blends state of the art custom precision CNC machining along with an ultra aggressive Stealth like design. The Javelin is machined out of a one piece billet aluminum extruded rail which is much stronger and more rigid than 2 piece rail systems. The Javelin series boasts aggressive good looks as well as being tough enough to handle any mission all while weighing in at only 10.8oz!  The Javelin-12-SD-M-LOK Provides (3) QD Sling Swivel Attachment Points in total that are integrated into the Rear of the Rail being left, right and bottom as well.

Designed to be used in with a (Micro/Low Profile Gas Block) on a (Pistol, Carbine length or Midlength gas system).  This rail system gives the user a light weight more ”rigid” and modular way to mount accessories to their AR15.


Our rails are designed to work and function with other (MILSPEC) components.  Beware there are several companies in the firearms AR15 industry that make nice looking parts that are not (MILSPEC) and most importantly do not feature the required (MILSPEC) features in order to accept (MILSPEC) components.  For reference you can take a look at our (Billet Upper) and notice the (MILSPEC) “recessed” cut near the front just behind the threads on the upper which is required to accept our rails. We have been told our rails can be slightly modified to work with the F-1 Billet uppers. While we have seen it done before, we cannot recommend this as a manufacturer.


  • Free Floating
  • Fits Most Over Suppressors
  • CNC machined from 6061-T6 Aircraft Grade Aluminum
  • Single Piece Billet Machined Extrusion
  • Rail Weight: 10.8 oz.
  • Barrel Nut Weight: 2.4oz.
  • (3) QD Sockets
  • Anti Rotation Design
  • Solid mount interface
  • Sleek Appearance
  • Mil-Spec 1913 Picatinny Rails
  • Mil-Spec Type III Hard Coat Anodized
  • Inside Diameter: 1.601 inches
  • Width: 2.5 inches
  • Provides a Continuous Limited Upper Rail
  • Includes: Barrel Nut, Shims, Hex Key, Instructions, Screws
  • Made in the USA by Special Ops Tactical


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