This is the Tungsten version of the FosTech Stealth Raptor Builders Kit, with a 13-inch Mach 2 handguard (FosTech part no. 10064TU). FosTech includes a stripped Stealth lower receiver, a stripped Stealth complete upper receiver and a lightweight Mach 2 rail with its barrel nut and hardware. Tungsten is one of four finishes FosTech lists for the Stealth line, so the kit suits a build that wants something other than black or OD Green. It is a starting point for a lightweight AR-pattern rifle that you finish with your own barrel and parts.

Key Specifications

• The finish is Tungsten, one of four colors in the Stealth lineup.
• The rail is a 13-inch Mach 2 lightweight handguard from FosTech.
• The kit includes a stripped Stealth lower receiver for your own fire control parts, stock and grip.
• The kit includes a stripped Stealth complete upper receiver for the upper side of the build.
• The barrel nut and hardware are included with the rail.
• The kit is 100% USA made and carries a limited lifetime warranty from FosTech.

Frequently Asked Questions

What color is this kit? It is finished in Tungsten.

What comes with the kit? FosTech lists a stripped Stealth lower receiver, a stripped Stealth complete upper receiver and a lightweight Mach 2 rail, with the barrel nut and hardware included.

Is the handguard 13 inches? Yes. This kit has the 13-inch Mach 2 rail.

Buy the FosTech Stealth Raptor Builders Kit, 13-Inch Mach 2, Tungsten

A stripped upper and lower with a light rail is a tidy way to begin a build, and the Tungsten finish sets it apart from the usual black. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more rifle parts while you are here.